I thought the same but i tried to disable the 2FA in my uplay accout and the problem stil persists...

If people are still checking this thread again, I've got no problemas anymore with Uplay, even using the latter 2FA.

I'm getting the same problem. It didn't ask for 2FA (which scares the shit out of me) and none of the games I have installed on Uplay are recognised.
Edit: Should add, I only recently re-linked the integrations after having unlinked them on launch of GoG. Oddly, in the Recent section, it can see that I recently played the installed games. lol
Edit2: Dunno what I did... but the problem resolved itself since I posted the last edit. It looks like it was just taking forever to update the installed games.

for me it doesnt show anything. i got the gog galaxy client, connected uplay and none of my 6 games are there

Same for me. I connected my uplay account but none of my games appears on GOG Galaxy

Hi I'm having the same issue. The problem appears to be related to the fact that UPlay has ben changed to Ubisoft Connect.

I initially had the same problem with Assassins Creed Valhalla and Immortals Fenyx Rising, although oddly enough not Watchdogs Legion. My old Uplay games were all showing properly, and after opening a ticked with GOG the problem eventually went away.

However I bought Ghost Recon Wildlands in the Ubisoft sale, over Christmas and have exactly the same problem. The game appears in Subscriptions as a Uplay+ game with the Install button showing on GOG rather than the Play Button but does not appear in the owned games. If you press Install the launcher launches the Ubisoft Connect Launcher, and then Launches the game with no problem, but your playtime isn't recorded under owned games.

I am waiting for my Ubisoft+ subscription to expire to see if the game is then picked up as being owned.

Will update as required, but at the moment it appears that GOG need to switch from Uplay to Ubisoft Connect integration, as all my games show of the Ubisoft Connect Launcher itself.

Regards