I have a single-member LLC company in the US and I want to sell on Amazon UK. However, when I try to take action through my Amazon account, I receive the following warning. Is there anyone who can help with this issue?

(We are contacting you because we need additional documents to continue with your account verification.

Why is this happening?

The Operating agreement that you provided was not signed.

What type of document do I need to provide?

-- A copy of the company's signed operating agreement. This document should include the total number of company shares, shareholding percentage of all business owners, the procedure for transferring shares, and the date and signatures of all the shareholders.)