It's not clear that you're looking for comments but......

1. Get your pH down into 7.2-7.6 range with muriatic acid

2. Reread the instructions for the Alk test and repeat. If that result is correct, (I don't think it is) it may be a world record.

3. Without CYA, chlorine quickly disappears in daylight. Add it in the evening to be most effective. Once the CYA is established, Cl will do better in the daytime. CYA will last all Summer, at least.