Mauromoh, all the solutions you listed, I have tried. Battery removal for 10 mins, disconnected the HMI and reconnected it, etc. The only thing I haven't tried in the cleaning of the HMI box (would love to see a photo of the HMI Box). What part of it did you clean? And what did you clean it with? I hope it's still working since your last post May 19 2021!
Cheers.