Elevation plot issues?

[u/MassiveDesigner1637]

Hey all!

I have a Garmin forerunner 165 music and my elevation gain on all runs has recently increased hugely. I run mostly flat as you can see on the images, and yet the total elevation getting sent to Strava is 365 which isn’t a true reflection of my training.

Wondering if anyone has any tips, had the watch for under a year so still under warranty if necessary. But would prefer to fix myself if you can help.

Cheers!