How to change my E-mail and GSTIN which is registered for India Compliance account ?
What is the use case here?
First things first, you should only register with the details you want. We discourage dummy details.
Secondly, you can always register again with new details.
If you have already made a purchase for API credits under old account, share the Invoice with details of the Old and New accounts with email@example.com and we will transfer the purchase to the New account.