Hi @KatiaOe, welcome to our forum!
Your question has been translated to English as this is an English only forum.
I'm not quite sure that I understand what you mean with "remove overlay", are you asking about screen overlay? If that is the case, try rebooting your phone in safe mode and give the permissions to the correct applications as one of your downloaded applications is the cause of this.
Let me know if that helps and I'm sorry if I misunderstood your question!
