Apex probe trouble. Need help

[moz71]

First I bought new calibration fluid. Started with ph. It seem to calibrate successfully but tested it by keaving in 10 solution and watched it creep down to 9 Then put it back in the 7 solution and it was reading 6.82. Is this a sign it may be going bad?
Second, the salinity probe times out the first step in dry mode and saying communication error. Tried all ticks I read. I recalibrated because my salinity wasn’t matching my digital Milwaukee. And ph was always reading low. I bought with used system and believe they are 2016 probes. Are they bad?

 

[Mical]

I can't help with salinity probe but with PH probe I found if you let it sit in cal fluid "7" for 3 mins then cal fluid "10" for 3 mins then back to "7" it should calibrate. They can be real finnicky but do it multiple times.