UCAS application 2026: education

Hello, idk how confusing this will sound but will try make it not sound so confusing or if it’s just me being dumb. Im a gap year student and I need to put in my a level results for university, however when i click the a level qualification which is what i believe to be A-Level (9 units) as thats the only one from the list that seems relevant, I go onto add a subject and 1) it doesn’t come up with the subject being recognised direcltly and 2) the grade comes up as two a level results eg. AA*, AB, BB ect. I didn’t get an AS grade plus there are limited options for example i am unable to put in AC. I am wondering if anyone else is having this issue or can jsut tell me which qualification to choose for standard a levels please