Sometimes, team members can't see the context menus on Windows 10 and 11

We use Dropbox as our primary server.   We're a PC-based company, and the majority of us are on Windows 11, though some are still on 10. We have 10 team members, and we are using 3% of our available space.  Several of our team members are having sporadic issues lately where they cannot see Dropbox options when they right click in file explorer and therefore are unable to copy Dropbox links or make the file available offline.  We've had to offload Dropbox in some cases and relink - in another case where a team member accidentally dragged his file into a team folder (something that is not supposed to be able to happen according to support) we had to redo the whole thing, as we could not drag the folder back where it belonged.  These issues have been happening only over the last two weeks, and it seems odd that it is happening to multiple people.  Anyone have any idea of what may be happening here?  It's hampering our productivity.