Using Iphone app to cloud access make MCU crashes

Hi,

When I access the system with the Iphone and App, after a successful login, some setpoints, selectors, etc. inputs are overwritten/crushed with values out of ranges. If I try to change the values, it keeps overwriting it with out of range wrong values.
My inputs values are constrained in code to be kept in range. But even with that, wrong values are pushed into the system.

If that would be a new system, I would say my code is bad, but it's been running for 4 years, and it just start happening since last week.

If I use an Andoïd phone and app, this doesn't happen. I can even change back the values for in range value. It's hard but I manage to do it.

So trouble is pointing toward Iphone and Iphone App... I maybe wrong, but it pointing that way.

As example, after logging, the date and hour are reset to initial hour and date, the clock ms correction is set to 876543 value, my regulation type selector list is set to nothing (choice with 2 options showing blank), percent tresholds are set way over the 100%, delay timer is set to minus something which is out of range... But not all inputs are off, I would say about 10-20%, and they are always the same with the same wrong values. It looks like a wrong size value is pushed in memory and crushes a lot of input values.

I know it's when I login because the hour reset to 0:0:00 when it happen. So when I log and it happen, hour show 0:00:xx with few seconds...

Also it's not happening at every login access, and it happen before I change something on the app.