Let college board assign you a test center "Ideal testing center"

I’m an international student, and since I live in a small country, there are only 5-6 testing centers available in the country. I signed up for the March 14 sat test; however, unfortunately, because of the coronavirus situation, the test has been canceled. Therefore, I tried to register for the May 2 sat test, but the seats are full. I’m thinking of registering as an “Ideal testing center” but I’m concerned about the refund when the testing is not available. Will I get a full refund if there are no testing centers available?
I really need to register this asap!!! Would be glad to have a quick response.