The error "'Your account does not meet the requirements for accessing this game" occurs when a Gaijin account does not have an access to the game test.
You may find the information on how to apply for the game test in the following article: How to apply for alpha-test
Please, pay attention to the following features:
1. Participation in previous public testing does not give the access to closed alpha testing of the game.
2. The product Enlisted: Alpha Application on your account does not provide the access to alpha testing of the game. It is only a note that you have already signed up for testing the game.
3. If you have already signed up for testing the game and if you are chosen as a participant in the test, you will receive a special invitation email with additional instructions.