How do I fix Apple Watch Ultra 2 charging issues?

Hello. My Ultra 2 is not charging. I've tried all the recommended steps except resetting. I've rebooted both it and the paired phone multiple times. Sometimes rebooting the watch allows it to charge for a bit but even that has stopped. Before I take it in for service, wanted to see if anyone else has experienced this and if there is a known issue or remedy. Thank you.

[Re-Titled by Moderator]

Original Title: Apple Watch Ultra 2 Charging Issue