Please do the following and see if this resolves the issue

For Android:

1. Open default browser. 
2. Open google.com. 
3. Top right corner will show the account used to login. Click on it and Logout. 
4. Clear Data and Cache: Long press on app icon. Click app info -> Storage -> Clear Data. (This may be different for different devices)
5. Clear history of default browser: Open the default browser--> click on 3 vertical dots at the right top of the screen->History->Clear browsing data->Clear data->Clear.
6. Open Sadhguru app.
7. Now click "Login" on Sadhguru Exclusive banner. 
8. it should give an option to actually choose the account. Choose the one you registered with.