Off the subject, but, regardless of who's numbers you trust, chlorine should be your priority right now...not Alk.

If the pool store tested correctly, you need to shock your pool. I would move Cl up to 25-28ppm in a vinyl pool and 30+ if it's concrete.

Then let it drift down into the 5-10ppm range and keep it there until you decide what to do about the high CYA.