Never ever create sub domains for your users using your main business domain. There is a reason why GitHub uses github.io.
You need to migrate user accounts to their own domain asap and use Search console to redirect and handle whatever issues that Google has flagged.
Never ever create sub domains for your users using your main business domain. There is a reason why GitHub uses github.io.
You need to migrate user accounts to their own domain asap and use Search console to redirect and handle whatever issues that Google has flagged.