Hi,
Thank you for sharing your question. I understand how confusing it is to purchase Microsoft 365 Family, receive the verification email at the correct Gmail address, and then discover that the subscription does not appear when you sign in to your Microsoft account.
This usually happens when the subscription was activated using a different Microsoft account than the one you are currently signing into, or when the purchase was completed under a guest session without linking it to your permanent Microsoft profile, which prevents the subscription from appearing on your Services & Subscriptions page. The best resolution is to sign in at account.microsoft.com using the exact Microsoft account that was shown during checkout and check the Services & Subscriptions section, or search your email for the “You’re all set” activation message to confirm which account the license was assigned to; once you locate the correct login, the subscription will appear automatically and you can begin installing Office or sharing the plan.
May I ask whether you used your Gmail address as the actual Microsoft account username, or if you have multiple Microsoft accounts that may have been signed in during the purchase? Please let me know what you find, and I’ll be happy to help you move forward.
I hope this helps.
Best Regards,
Noel