Sounds like a glitch. Have you closed down your computer and let it cool off?
Yes, new sellers do have restrictions on the number and value of what they sell. Also on the category. This is a Buyer Protection policy and nothing personal.
When you do make your first sales your buyer's cleared payments will also be held for up to 21 days against your good performance. If you use Paypal shipping, the shipping cost will come out of the Held payment. Plus you get a 5% to 18% discount on shipping from PO counter prices.
There is a learning curve. Ask. We are a friendly bunch of knowitalls and busybodies.