Mine has been running since I posted.
There was an update on Youtube's end, they're changing everything over to SABR https://github.com/iv-org/invidious/issues/5263. Eventually Invidious will need a major code change to continue working. For now, it is operational using a work-around implemented here: https://github.com/iv-org/invidious-companion/issues/60
I have my dockers set to update after appdata backup, so they pull in the fresh updates without my need for manual intervention usually.
it's possible that you will no longer need to use the master branch of invidious since a new latest was pushed to address the issues related to SABR https://github.com/iv-org/invidious/issues/4251#issuecomment-2837678730
For iOS I've been using Yattee to connect to my instance.
Hope that helps.