Just to add more troubleshooting on my end. I uninstalled Launchbox on Computer #1, which is the one it was working on but only updated in the past. After a complete wipe, I installed on in a new location (to be as fresh as possible) and retroachievements work without any issue, right after install. The Rom was the same one used on both PC's. Then i went to Computer #2 that it hasn't been working on, and did a fresh install with the release prior to this last release, and same issue, no retroachievements in Launchbox. So then i did a complete uninstall on computer #2 and installed on a new location, basically the exact same install as Computer #1 (both on an external harddrive) and same issue, no retroachievements show. I'm honestly baffled. One computer it works, the other it doesn't. Both are running windows 11 with latest updates. I don't know what else to try.