Is there any problem, If my sign in bank accounts differ from sign on pport?

There is absolutely no connection between your signature on pport and your signature with the bank. Pport is different doent altogether which serves the purpose of identification. However, purpose of signature in bank is to enable you to deal with your money. The signature helps you to identify yourself from others. It is difficult to copy a signature. Pport issuing authorities and / or those authorities who use pport to identify you are not concerned how you sign in bank. However, your bank may find your pport to be useful to identify you in case of need. So go ahead.