New Old Seller Questions

Hi Everyone,

I’m getting back into the selling game and it’s been close to 8 years since I did so. I mostly sell video games and memorabilia. Is there a good resource for getting restarted into this?

For example, I tried to list a Switch game and it said that I’m not authorized to do that; whereas old Amazon seller anyone could sell anything.

I’m just an individual with a private seller account, no high volume invoices or anything.