You say “quit working”. Did it work at some point?
If not and you want it to be the Linux launcher (the one created by CCP Snorlax) then look for @Gharim_Turen threads and comments as he’s been working on keeping it alive.
Otherwise can you try to simply use the standard Windows installer and launcher that comes with it. For several Linux distributions does this work nearly out of the box. I say “nearly”, because all you have to do is to tell WINE to run in “Windows XP”-Mode using winecfg and it will run the game including the Windows launcher. On Ubuntu 18.04 does it require dotnet40 to be installed with winetricks in addition before the game launcher works (for reasons unkown).