New Seller – Restricted in Almost All categories

Hi everyone,

I just got approved for the amazon seller account, and I’ve scanned a few items I was interested in selling, but it asks me for approval request and asks for either an invoice or a letter from the products company, neither of which I have because I’m reselling these items I bought.

I was wondering, if anyone knows what can be done about this; or which categories don’t require any approval to start selling on as a new seller? So, I can build a good seller reputation and then get auto approved for the categories I really want to sell on.

Thanks in advance