Hello aspirant

If signature with initials is not acceptable you could have just put signature with your name. With the signature you are proving that it is you who is filling this application.

There is no problem if your signature varies from the other documents. It's to ensure you are the candidate who is filling the form. That's all

And moreover you cannot change the signature in correction days given by fmge.

If you get the confirmation page, then the application was successful. if your signature is not accepted then it won't be successful. In that case you need to apply a fresh application again.

Hope this information is useful

Thanks