Hello @cluevo,
I am currently on the road as well, so no worries for getting back late.
The page /user was created after we installed CLUEVO plugin and used it. The permalink is is assigned through the editor.
Once I deactivate your plugin, I can access the page. Reactivating the plugin leads me to the CLUEVO user page. Saving page of settings->permalinks did no change.
At what point does CLUEVO call the user page? Could you point me to where I have to change it in the PHP code for now?
Regards
Max