T cell 40 tests ok but not making chlorine??

[waterbear]

After seeing your test results the first thing you need to do is add bleach to get the FC up to about 25 ppm to kill the algae. You need to keep adding bleach and brushing with a steel algae brush until you have killed the algae. Your test results look suspicious. TA of 9.5 just doesn't look right. Nitrate, nitrite and phosphate are really bogus tests designed to sell unneeded pool chemicals and the first two are rarely, if ever tested for. Are these from the pool store? If they are I would strongly suggest investing in a Taylor K-2006 test kit.
I would also check your cell for scaling and acid wash it. Your high pH and calcium hardness are a recipe for scale.

I suspect that your TA is too high. Your calcium at 450 is quite manageable but you need to get the TA down to about 70 ppm and keep your pH no higher than 7.8. When you lower it don't drop it lower than 7.6 since this will mean a slower pH rise in the long run. (pH rises faster the lower you put it.)
However, the first and foremost thing you need to concentrate on right now is killing the algae.