Your last readings and the pool store's readings are too different. I hope you didn't buy anything from them except reagents!

I would wait on your chemistry until you get new reagents except for keeping FC in the pool.

If you haven't ordered reagents yet, I use Amato Industries on Ben's Amazon link. Don't be afraid of shipping costs with them. It looks like each item you add to the cart has high shipping, but when you check-out, it all gets discounted. They fill orders quickly.