Can't choose my Dropbox folder and cannot see the advanced settings after reinstall

Hello Hannah, thanks for your quick reply. 

My understanding at the time was that Dropbox communication with Win11 was confused/corrupted following the recent update. That's why I tried the fresh installs. 

I have again uninstalled. So nothing installed at the moment. Just so you know I have two users on that computer: Administrator and Power User. I'm usually logged in as the Power User. I tried reinstalls under every possible combinations of Logged in as Power User w Admin rights, then without, then logged in as Admin, etc. With the online installer and with the offline installer. I cleaned up everything each time between install. (C:\Users\UserName\AppData\Local\Dropbox, etc.) I can never get to the Advanced "Pick your Dropbox folder location" step. I have spent numerous hours on this. Best part of a day. 

My files are in a confusing state at the moment. Usually I keep all my files physically on drive. Now since the latest DB/Win update that changed the behavior and added the green circle icons, I have 15 main sub-folders with 141 GB of physical data remaining over 153 GB total. So 10GB of random files missing in there !! 

On the other hand, I have one "ONLINE" Folder where I usually put stuff I want online. Usually there's a few gigs of offline in there day in day out according to the need of the moment but that drive currently weights 55 GB physically on drive !!! (over a total of 242 GB online). It's absolute Chaos !