Cannot login to account; receiving message "Not Authorized This email isn't associated with any accounts"

Had a security issue with my personal account last Saturday, so I changed the password. Then, I attempted to login to my seller account with the new info and it gave me an error message stating (something to the effect) that there were two accounts with the same email but different passwords. It gave me the option to “merge accounts”, which I now think I shouldn’t have done.

Since then, I have been sent to the “Not Authorized” error page every time I attempt to login.
It gives me the option to either “register” or “login again”. I have spent 10+ hours on the phone with various reps from various departments, clearly to avail, and have had a couple of them suggest I register a new store… which I am sure will immediately cause my actual store to be suspended and ultimately banned completely.

I have opened a couple of cases with Seller Support from the Seller Central help pages. The first was immediately rejected for “not being in reference to a login issue” which is absolutely baffling, and I’ve opened another and am now awaiting reply. Fingers crossed, or whatever.

I don’t know where else to go to ask for help, just hoping someone might see this that knows what to do.

My storefront is clearly still active as I (ironically) still get every email for every item that has sold, and have now received two warnings that I must ship my orders out immediately…

I have seen a few pages talking about this, but none have been terribly helpful.

Anything could be helpful, as this is about the most anxiety-inducing issue I’ve ever faced.

-Edit-
Just to add - this is a 12 year old storefront, and has been in good standing the entire time.

Just absurd that this enormous company can’t have a few dozen people in a call center to help deal with Seller Support issues. Clearly just want us all to leave.

What you’re experiencing is unfortunately a known but rare issue that occurs when Amazon accounts, specifically a personal buyer account and a seller account, are linked by email and then subjected to a password change or merge prompt, which can trigger internal access conflicts. Merging accounts, as prompted, often creates confusion in Amazon’s backend, leading to the “Not Authorized” loop you’re stuck in.

The correct path forward is to escalate this issue as a “Seller Central Login and Authentication” problem—not a general account issue—and request that it be handled by the Seller Identity and Verification team or Account Specialist team , not just frontline Seller Support. Mention that your storefront is still live and you are receiving order notifications but are unable to access the dashboard due to the merge.

Do not create a new seller account under any circumstance, as that will almost certainly trigger a related accounts violation and possibly get both accounts banned. You can try escalating through the “Contact Us” form, choose “Account Settings,” then “Login Settings,” and describe the account merge conflict. Additionally, post the full issue in Seller Forums or reach out via Executive Seller Relations (escalation via [email protected]) with a respectful but detailed email outlining the 12-year history, account standing, and urgency due to pending orders.

Keep your messaging concise and factual, and avoid emotional language even if the situation is understandably stressful, it increases your chances of serious attention.