Odd problem - getting logged out when I refresh lemm.ee

Just starting this week, when I first visit lemm.ee, I used to be logged in auytomatically, every time, but now I have to manually choose to login. My browser (Firefox on Ubuntu) definitely knows my username and password still.

Then, I can click around, go from page to page as I want, but if I hit F5 to refresh the page, or right click and choose the reload icon, I do get the page reloaded, but now I am not logged in.

I've tried disabling my (5) extensions but still saw this issue.

I tried completely erasing my cache in Firefox. Same issue still.

ETA: I tried explicitly logging out and logging back in (again). Same issue still.

This is only happening on lemm.ee.

Any ideas why Lemme doesn't want to keep me logged in?

Thanks!

ETA -- Thursday night: I made sure I am clearing cookies along with the cache. The problem remains. And, as @[email protected] said, the expiration date on the "jwt" cookie lemmee sets does expire in 3023. I installed an extension so I could edit that, set it to 2Dec 13 2025, saved the cookie. But still refreshing the page causes me to be logged out. This is just an annoyance at this point, not a big deal, but some sort of resolution eventually would be great. Thanks for any other ideas.