Problem to join a group when account was created through Google (federated login)

Problem to join a group when account was created through Google (federated login)

Hello,

We have users in Zoho with federated accounts (Google login).
In creator i created a group and added the users I wanted to join.

They received an email invitation to join the group, but they cannot proceed with the invitation request since they have to log and only an username/password is asked. They cannot log with their Google federated login credential.

Is there another method?