airsail said..Orange Whip said..
If you have problems with your Garmin just take it back to the retailer and they replace it with a new one. (Garmin’s policy) I’m on my third which didn’t want to charge the other day, so probably soon on my fourth.
After 6 replacements, mainly due to a stuck button or not charging Garmin chose to refund rather than replace. I never did work out how fo stop the buttons from becoming stuck but soaking in hot water did seem to free them for awhile.
Not charging was caused by corroded terminals, fixed by a wipe of Vaseline and then a cover fitted.
Not sure why you had such a bad experience. I have worn a garmin 24X7 except when charging since 2017 and never had either of those issues. I do swim regularly (several times a week) so perhaps the fresh/chlorine water cleans out any salt that could cause those issues?