rahulgarg
Oh so once you changed it to rahul.garg, you were not allowed to go back to rahulgarg? Either from App or Website?
Did you try phone banking on deactivating your account, so that you can re update the email?
If you are unable to do it online, then worst scenario, we will have to go a branch and submit the form for email change.
I am sorry, I did not mention that the change has to be temporary 🙁