WWW.text problems on android

Hello!

I'm trying to acces a string from a txt file in a FTP.

it works on the editor but on my phone it won't load.

is anyone else having this problem?

best regards.

here is my code:

public string url; private void Start() { StartCoroutine(StartCR()); }

     IEnumerator StartCR() 
     {
         WWW www = new WWW(url);
         yield return www;
         
 
             GetComponent<Text>().text = www.text;
 
     }