PH is different yellow from Taylor charts

[xcableguy]

Howdy,
New to pool care. We use the Taylor chemical test kit and have a Chemtrol autofeeding chlorine and muriatic acid into our 100 year old pool in the basement of a school.
The chlorine test color matches perfectly for 1-2 ppm, the minimum required according to the local health department and the PH is a yellow that is brighter than what's on the test kit.
This is confusing because the Chemtrol machine says 7.6 for PH but the chemical test is not agreeing with that number.
Here are the pool numbers: CYA - 0 / TA - 20 ppm / Chlorine 350 ppm / PH odd yellow not on chart so guessing low 7's range / Free Chlorine 1-2 ppm / Total Chlorine 2-4 ppm
Any help is appreciated.

[Teapot1]

PH is usually tested with phenol red, clue in the name. Are you sure someone hasnt got something mixed up? Chlorine 350ppm is 348ppm too high. TA should be a bit higher or you could damage/erode the surface.