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Assuming those readings were taken after at least an hour of circulating the water:
Hopefully your PH is actually 7.5, and not 75.
I recommend raising the FC level to around 10 manually, and then checking if the water is warm enough for the SWG to work (around 60 or higher for most brands).
If the chlorine does not all vanish instantly, the water should clear up over the next few days. If the chlorine does all vanish, you will need to SLAM the pool.
Longer term you will want to lower TA and raise CYA. But before tackling that get everything else stable.