If you do not have a single site with rich content, a quick fix is simply to resurrect it and claim it as yours. Every day, thousands of websites are abandoned, closed and their domain name is available for registration. That's what I did to be listed on Amazon.com. It took me 3 hours and cost me $ 8 (domain name registration).
Amazon will review the website you mentioned during registration, which it calls your main website. A complete blog with unique content that has been around for at least 6 months is enough.
Amazon.con will review your main website only after you have made your first sale, while Amazon Europe will review your website at the time of your request.
Tip 1: You can use the same website to apply to Amazon.con and Amazon Europe (UK, DE, FR, ES, IT), it works.
Tip 2: You can use the same email address to apply again after a rejection. I did it three times before following the strategy outlined above.
Unless you want to continue using your FSB website, you will then have to poke it with unique content using the editing section of each page and each product.
And it will cost you more time.