Climb Pro no longer detecting climbs

Has anyone else had any issues with Climb Pro on their 540 no longer detecting climbs?  Mine no longer detects climbs either in free mode or when following routes.

I bought the unit new in Aug of this year (2023), and out of the box it detected climbs no problem.  Even after setting up my activity profiles.

Since the beginning of Sep it no longer detects climbs, not anywhere, even in spots where it detected climbs in Aug.

I've checked that all of my activity profiles have climb detection turned on for all climbs.

The only thing I can think of is that a firmware update has caused this...?  However, when I go back and check my activities, it doesn't seem to align perfectly with where I updated firmware from 9.29 (what it came with when I bought it) to when18.23 or 18.25.  Any help or thoughts would be greatly appreciated.

Thanks!