This sounds crazy to me. Never ever mix your business and personal accounts for anything! The point of an LLC (in any jurisdiction) is to keep your personal and business concerns separate, so why would you break that rule for Google? Which is why my reaction to these lines:
> I always sent emails related to the business from my @tinypilotkvm.com email address.
> I always used @tinypilotkvm.com email addresses whenever signing up for services on behalf of TinyPilot.
was along the lines of "Well, DUH!" Of course, that's the first thing you do with a new business: dedicated bank account, dedicated email address.