Currently today I've found an issue with this mod force unloading my personal chunks on my server even when I've been actively playing for the past week or so. The issue seems to even persist even while I'm online.

Here are some server logs for reference (they should have timestamps to show the time/date):
https://gist.github.com/ea4ab08a5a31c0623d303969fda92c86

Oh I misread.

The function works by looking up your playerdata file and looks up when that has been last modified to determine which chunks to unload. Any idea if someone might have restored that from a backup or something?

I don't really see a way for it to just not notice you being online. Unless the file was write protected or something and not changed while you were playing.

This is a config option that is not enabled by default...

It is currently enabled by default on All the Mods 6 modpack, but are you gonna tell me that you won't look into the issue just because the feature isn't enabled by default on the base version of the mod?

I believe I've seemed to of found the issue. When one of my admins initially setup the server, he left it in offline mode (as our template server.properties file has it set to offline mode by default to properly use our proxy) but we later changed to online mode after myself and one other user had logged in with offline UUID's. I will try to remove my offline UUID and keep you posted on the issue.

This seems to of done the trick, I've waited for a bit to make sure and it hasn't shown back up in console logs, nor has it unloaded my chunks.