Mesh Collider Won't Work After Running Another Collider

I really don't know any other way to explain this but here's whats happening. I'm working on a 2D Space Shooter and my spaceship/spacecraft works fine when it set to a box collider. I'm able to generate the shield and everything and when the shield get's destroyed (after 3 collisions from an enemy object) this spaceship continues to get hit...

However my problem is,

Changing the spaceship from box collider to mesh collider (to make it more fair because the ship isn't a square and it can get hit before actually being touched) everything works fine until the shield get destroyed. After the shield is gone the enemies just passes through my ship. I'll post up my three scripts if it can help. (I did not paste the full code due to making it such a long post, instead I posted the parts I'm trying to figure out or what is being used)

         // Player Script

public int numberOfShields = 3; // Set the number of shields our player gets to use public GameObject shieldMesh; // Load shield mesh public bool shieldOn =false;

void Update () { // Store input variables float transV = Input.GetAxis("Vertical") playerSpeedVertical Time.deltaTime; // Use to store vertical movement float transH = Input.GetAxis("Horizontal") playerSpeedHorizontal Time.deltaTime; // Use to store horizonal movement

// Move player based on input transform.Translate(transH, transV, 0); // X to move left and right. Y to move up and down

// Create a bullet if(Input.GetKeyDown("space")) { if (DefaultShot == true) { Instantiate(projectile, socketProjectileDefault.position, socketProjectileDefault.rotation); audio.Play(); } }

// Create a sheild if (Input.GetKeyDown(shieldKeyInput)) { if (shieldOn == false) { GameObject clone = Instantiate(shieldMesh, transform.position, transform.rotation) as GameObject; clone.transform.parent = gameObject.transform; shieldOn = true; } }

// Shield Script

  public int shieldStrength = 3;
 

void Update () {

if (shieldStrength <= 0) { Destroy(gameObject); } }

// Enemy Script

void OnTriggerEnter (Collider other) { if (other.gameObject.tag == "Player") { scriptPlayer playerScript = other.GetComponent(); playerScript.lives -= 1; playerScript.DoubleShot = false; playerScript.DefaultShot = true;

// Tell scene manager that we lost a life scriptSceneManager sceneScript = sceneManager.GetComponent(); sceneScript.SubtractLife();

if (explosion) { Instantiate(explosion, transform.position, transform.rotation); audio.clip = playerDamageAudio; audio.Play(); }

StartCoroutine(playerScript.PlayerDamage()); ResetEnermy(); }

if (other.gameObject.tag == "Shield") {

scriptShield shieldScript = other.GetComponent(); shieldScript.shieldStrength -= 1;

if (explosion) { Instantiate(explosion, transform.position, transform.rotation); audio.clip = shieldExplosionAudio; audio.Play(); }

ResetEnermy(); }

if (explosion) { RandomSpeedAndSize(); }

}