Dumb question but maybe I didn't have enough coffee today:
From V3->V4 did the Unsupported URL change from txt to csv? Can it be changed back to txt?
Not really a big issue, just learning some basic scripting myself so I was trying to figure out how to automate the unsupported URLs using my own script, but I might just use the JDownloader in the end (I use to program 10+ years ago but I went into another industry and lost all my knowledge, and now python/ruby/etc is the new hotness)
while I dont have Windows 11, Im feeling this is due to Energy Saving features, I recently saw Chrome do a change like this, when a session or tab isn't active, it purges tab memory to cache. I would advocate looking into Performance/Energy features on Windows 11 and disable any features that affect when the system is Locked/user session is logged out.
edit2: probably maybe also your network drivers too, I remember this being a pain in the butt back in the WinXP days for some Intel NICs, more energy saving features