Loading can take long during peak times currently, up to 15 min at times.
If waiting does not help go to your Xsyon folder (right click Xsyon icon, select open file location) and then into the Save Folder. Delete Options.sav
If this also not help go into the Xsyon/Data Folder and delete Zone.xsip , the launcher will download the file again but jkeep in mind this is a 1,5gb sized file. there is also a torrent available on the forums.
Hope this will help you. If not please reply to this bug post and incl any possible crash logs you got if the game crashes while loading.