For UK accounts that fail to connect correctly - this is a known issue on Amazon's side that occasionally blocks registration due to a bug related to combined EU accounts not recognizing the current login state to Seller Central correctly.

As a workaround, we recommend using the following linked method (with instructions) to manually enter your SELLER ID and AUTHORIZATION TOKEN for the marketplace that is failing to connect currently:

The instructions are on the right-hand side of the page.


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