ITC-306A Turned heating off with no notifications killed fish

I suspect it was the continuous heating alarm?
Looking at the app logs the temperature was 0.1 degrees lower than the max temp set for 24hours

No push notifications were sent, for 2 days the fish tank was at 13 degrees instead of 26 and killed my fish

Can the continuous heating fail safe be tweaked to not just kill the power or have a tolerance to set, it was heating ok just 0.1 degrees off, not really a fail safe to just kill everything

If this can’t be fixed I guess I need to throw away the InkBird and buy something else, if i had stuck to a simple heater I’d still have my fish that I’d grown from babies for the last 4 years