How to select the cash account and market order questions on Tiger Brokers?

Hi I want to use cash to buy stocks on tiger brokers. When I put in the order, it shows I'm using margin account.
1. Where can I select cash account?
2. What does fill outside "allowed /Not allowed' means?
3. I want to place an order to buy at a price at $10 but not more than $10.30. Do I use orders of buy stop-loss limit price ? If yes, what is the minimum range I can put eg price reach $10, Limit Price $10.01?