I hope you are having an awesome weekend so far! I'm so sorry to hear about your credentials. I would love to assist you to ensure you have this corrected.
Hi cbeatchbookkeepi. Changing login credentials can be a strenuous process but QuickBooks Online helps make that process simple. Just to add to the valuable info Lourdes has shared above, you can also change the email address you use to sign in even with QBO Canada. Here's a Canadian article which shows you how to do that. I recommend trying that first and let me know how you make out. I'll be on standby.