Responsive Customer Service: Troubleshooting REDOX and pH Probes

Client:
Hello, this is Mr OUHRI

Technical Advisor:
Hello

Client:
I am contacting you again to let you know that I have received the REDOX probe and it is working perfectly! Thank you for your responsiveness. However, the PH probe, which seemed to be functioning last week, has now also stopped working! Just like last year, they malfunctioned one after the other!

Technical Advisor:
What is it doing?

Client:
I am getting a PH error message and the tube, like the REDOX, is brown!

Technical Advisor:
When things go wrong..... I will send you a new one today! Sorry about that.

Client:
I hope it won't malfunction anymore! In any case, I have noted that a shock chlorine will no longer be done with the probes! They will always be dismantled! Once again, thank you for your availability and responsiveness! Have a great day!

Client:
Best regards, Mohamed OUHRI

Technical Advisor:
I think that's the problem. Hopefully, it will work! Have a great day.