I have a GSuite subscription that I’ve been thinking of canceling. I wonder if there is an obvious way to know if this could happen to me. I have emails from it’s main email address forwarded to a personal account, and probably also have the personal account setup as a concact perhaps. I will have to thoroughly read through the settings. My personal gmail account is 14 years old.
If you have a paid G Suite subscription, you'll have access to their phone/email/chat support [1], and you can call them to find out if your Gmail's linked.
I think the OP's problem was upgrading to G Suite via a new "Gmail for Business" option [2], which I still can't find on my personal Gmail accounts.
