This usually happens when your login is tied to an EU-only Seller Central “region” and Amazon has not actually provisioned your North America seller profile (or it exists but is stuck in an incomplete/blocked state), so the email is recognized but the US marketplace isn’t enabled in the seller-identity selector.
First, stop trying to create a new account, because that risks duplicate-account flags; you want the existing identity to be granted access to the North America region.
Try these practical steps:
(1) sign out everywhere, clear cookies or use a private/incognito window, and log in again, because the region redirect is often cookie-driven; (2) in your EU Seller Central, go to Global Selling (or Account Info) and look for an option to add/activate “North America” marketplaces and complete any pending verification prompts, because a missing KYC step can hide the region; (3) check whether your EU account is “Unified” under one email but you have a different “Seller ID/Merchant Token” for North America, if someone previously started the NA registration and abandoned it, you may need Amazon to re-open that registration rather than create anything new; (4) if you have any case history that references North America, search your email for old Amazon messages about “North America account created,” “US tax interview,” or “verification required,” because that often reveals which entity and which seller ID Amazon thinks you should be using.
Since EU support is bouncing you, the most effective wording is to open a case in EU Seller Central and ask for escalation to the “North America Account Setup / Global Account linking” team, and be very explicit: you are not asking to open a new account, you are asking to enable access to the existing North America region for the same email, and the US is missing from the marketplace/region selector while the system says the email already exists.
Include screenshots of (a) the country selector page without the US option and (b) the “account already exists” message, and include your EU Merchant Token/Seller ID so they can locate the identity record and attach the NA region to it.
If they still refuse, open a second case under a different subject line like “Cannot access North America region – existing email recognized, US not available in selector – please provision NA seller profile,” because the first-line agents sometimes close cases when the title is vague.
The key is: don’t create duplicates, force an internal escalation, and provide the identifiers and screenshots that let them fix the region provisioning rather than treating it as a password/login issue.