Need to lower your pH level, fairly quickly. Those TA + CH levels are going to cause scale to appear on the SWCG plates, and I doubt the Intex units have a self-cleaning cycle.

Read the muriatic acid page linked in my sig, then get a gallon of muriatic acid, and then begin dosing, maybe a cup or two at a time -- do NOT measure -- pour and guess-timate. Wait till the pump has run at least 2 hours, retest, and re-dose as needed. Keep the pH in the 6.8 - 7.0 range. It may take a number of days for the TA to drop.