Help us with a quick review of your account HELP ME

I'm new to PayPal, and I've been selling loops and other music here and there. The thing is, my account got restricted.

Impact on the account :

• Pay with PayPal
• Refund payments to customers
• Send payments
• Withdraw funds from PayPal

They ask me to do this:

• Upload a photo ID

• Provide proof of delivery

• Provide a purchase receipt from your supplier

• Provide more information about your transaction or transactions

The identity thing is easy, the problem is the proof of payment. I get paid via PayPal and I send the loops to their email. I don't have any proof of payment. How do I fix this? Is there a solution?