Oh my, I apologize for the trouble. Did not even occur to me there were other types of keyboards. :0 I'll definitely keep that in mind for the future.
The mouse thing is also weird... as it should just use RM's system. To get to the crystal you'd have to mine the sand-pillars which also use the left-click, so I assume it was working for them? But not the crystal? (Or more specifically the Sand material you need to shoot to hit the crystal, as the crystal cannot be interacted with directly by left-clicking). Maybe it has something to do with using Electron instead of NWjs? I'll look more into it. Thanks for giving it a shot despite all the problems! Sorry for all the trouble again. >.<