Hey, just came here to post this. I got the same problem. I use ctrl+alt+e as the global hotkey, because I think it makes sense, since I open Enpass in the browser with ctrl+e.
According to this documentation https://docs.microsoft.com/en-us/dotnet/api/system.windows.forms.keys?redirectedfrom=MSDN&view=netcore-3.1, the key is named RMenu.
Maybe the developers can look at this and differentiate those keys (ctrl+alt vs altgr) on keyboards, that have it?