Gst migration

Any chances of last date getting extended?

We have two entities. 

1. A Pvt Ltd Co is almost ready but the portal is not accepting the digital signatures and hence pending

2. A proprietorship. We have its provisional Id but the system is not recognising the ID. We don't have its password also. While for the co. we received the password along with the ID. 

Net result, both are still pending and the last date is Apr 30. Any remedies with anybody and any chances of the date getting extended.