This error occurs because the Google account you want to connect is already used by another Routine account.
You need to "disconnect" that Google account to be able to re-use it.
๐ก Below, we refer to:
email address
as the email address of the Google account you are trying to connect to yourmain account
main account
as the Routine account you want to continue using in the futureold account
as the Routine account which uses theemail address
(Google account) you are trying to add to yourmain account
Please follow the procedure below:
Log out of Routine
Log in Routine with your
old account
Most likely you are not using this account but do check that there is no information worth saving: tasks, pages etc.
Still connected to your
old account
, go to Settings/AdvancedClick the text Delete your account
Log in with your
main account
Navigate to Settings/Accounts
Add the
email address