Tilemap wont update at random certain things;

I have recently been working on a random 2d golf course game inspired by the sx pectrum golf game and now i hvae come across a problem where many of my playtesters get to a point on the course and they then find they cant move in a certain direction anymore. This problem seems to hvae no pattern and i cant find a fix. I am using tilemaps to build the course then a second tilemap that changes the location of the ball based on user input in a text box. My code is below:

void powerSet() { inputField.ActivateInputField(); if (done2 != true) { if(backTilemap.GetTile(ball) == greenTile) { inputField.placeholder.GetComponent ().text = "Input power 1-3 (putting)"; lastBall = ball; } else { inputField.placeholder.GetComponent ().text = "Input power 1-8"; lastBall = ball; }

         }
         if (done2 == true)
         {
             directSet();
             return;
         }
         if (Input.GetKeyDown("return"))
         {
             powerS = inputField.text;
             inputField.text = "";
         }
         if (powerS == "1")
         {
             power = 1;
             powerS = "";
         }
         if (powerS == "2")
         {
             power = 2;
             powerS = "";
         }
         if (powerS == "3")
         {
             power = 3;
             powerS = "";
         }
         if (powerS == "4" && backTilemap.GetTile(ball) != greenTile)
         {
             power = 4;
             powerS = "";
         }
         if (powerS == "5" && backTilemap.GetTile(ball) != greenTile)
         {
             power = 5;
             powerS = "";
         }
         if (powerS == "6" && backTilemap.GetTile(ball) != greenTile)
         {
             power = 6;
             powerS = "";
         }
         if (powerS == "7" && backTilemap.GetTile(ball) != greenTile)
         {
             power = 7;
             powerS = "";
         }
         if (powerS == "8" && backTilemap.GetTile(ball) != greenTile)
         {
             power = 8;
             powerS = "";
         }
         if (power != 0)
         {
             done2 = true;
             
         }
     }
 
     void directSet()
     {
         if (done3 != true)
         {
             inputField.placeholder.GetComponent<Text>().text = "Input compass direction";
             lastBall = ball;
         }
         if (done3 == true)
         {
             StartCoroutine (Move());
             return;
         }
         if (Input.GetKeyDown("return"))
         {
             direct = inputField.text;
             if (backTilemap.GetTile(ball) == treeTile && UnityEngine.Random.Range(1,11) <= 6)
             {
                 statusText.text = "You  rebound  off  a  tree";
                 power = 0;
                 reboundTree = true;
             }
             if (backTilemap.GetTile(ball) == sandTile)
             {
                 power = power - UnityEngine.Random.Range(2, 5);
                 if (power < 1)
                 {
                     power = 1;
                 }
             }
             if (backTilemap.GetTile(ball) == roughTile)
             {
                 power = power - UnityEngine.Random.Range(1, 4);
                 if (power < 1)
                 {
                     power = 1;
                 }
             }
             inputField.text = "";
 
         }
         if (UnityEngine.Random.Range(1, 8) == 7)
         {
             sidePower = UnityEngine.Random.Range(-1, 2);
         }
         if (direct == "E" || direct == "e")
         {
             ball.x = ball.x + power;
             ball.y = ball.y + sidePower;
             tilemap.ClearAllTiles();
             tilemap.SetTile(ball, tile);
             direct = "";
             done3 = true;
         }
         if (direct == "W" || direct == "w")
         {
             ball.x = ball.x - power;
             ball.y = ball.y + sidePower;
             tilemap.ClearAllTiles();
             tilemap.SetTile(ball, tile);
             direct = "";
             done3 = true;
         }
         if (direct == "N" || direct == "n")
         {
             ball.y = ball.y + power;
             ball.x = ball.x + sidePower;
             tilemap.ClearAllTiles();
             tilemap.SetTile(ball, tile);
             direct = "";
             done3 = true;
         }
         if (direct == "S" || direct == "s")
         {
             ball.y = ball.y - power;
             ball.x = ball.x + sidePower;
             tilemap.ClearAllTiles();
             tilemap.SetTile(ball, tile);
             direct = "";
             done3 = true;
         }
         if (direct == "SE" || direct == "se")
         {
             ball.y = ball.y - power;
             ball.x = ball.x + power;
             tilemap.ClearAllTiles();
             tilemap.SetTile(ball, tile);
             direct = "";
             done3 = true;
         }
         if (direct == "SW" || direct == "sw")
         {
             ball.y = ball.y - power;
             ball.x = ball.x - power;
             tilemap.ClearAllTiles();
             tilemap.SetTile(ball, tile);
             direct = "";
             done3 = true;
         }
         if (direct == "NE" || direct == "ne")
         {
             ball.y = ball.y + power;
             ball.x = ball.x + power;
             tilemap.ClearAllTiles();
             tilemap.SetTile(ball, tile);
             direct = "";
             done3 = true;
         }
         if (direct == "NW" || direct == "nw")
         {
             ball.y = ball.y + power;
             ball.x = ball.x - power;
             tilemap.ClearAllTiles();
             tilemap.SetTile(ball, tile);
             direct = "";
             done3 = true;
         }
     }
 
     IEnumerator Move()
     {
         score += 1;
         done2 = false;
         done3 = false;
         power = 0;
         if (reboundTree == true)
         {
             yield return new WaitForSeconds(3);
         }
         if (backTilemap.GetTile(ball) == holeTile)
         {
             backing1.SetActive(true);
             statusText.text = "You  holed  out  in  " + score;
             yield return new WaitForSeconds(0.5f);
             ballSheet = GetComponent<TilemapRenderer>();
             ballSheet.enabled = false;
             yield return new WaitForSeconds(2);
             SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex);
         }
         if (backTilemap.GetTile(ball) == waterTile)
         {
             statusText.text = "In  the  water";
             tilemap.ClearAllTiles();
             tilemap.SetTile(lastBall, tile);
         }
         if (ball.y >= 12 || ball.x <= -17 || ball.y <= -10 || ball.x >= 16)
         {
             statusText.text = "Out  of  bounds";
             tilemap.ClearAllTiles();
             tilemap.SetTile(lastBall, tile);
             ball = lastBall;
         }
         if (backTilemap.GetTile(ball) == sandTile)
         {
             statusText.text = "In  the  bunker";
         }
         if (backTilemap.GetTile(ball) == roughTile)
         {
             statusText.text = "In  the  rough";
         }
         if (backTilemap.GetTile(ball) == treeTile)
         {
             statusText.text = "In  the  trees";
         }
         if (backTilemap.GetTile(ball) == fairTile)
         {
             statusText.text = "On  the  fairway";
         }
         if (backTilemap.GetTile(ball) == teeTile)
         {
             statusText.text = "On  the  tee";
         }
         if (backTilemap.GetTile(ball) == greenTile)
         {
             statusText.text = "On  the  green  (max  power  3)";
         }
         backing.SetActive(false);
         reboundTree = false;

Hope you can help