You’re very welcome!
No - not the built site! RW must always control how everything else happens
I’m not 100% sure that this is causing the trouble. But I’d suggest the following - especially if you have not published a site before:
1 - make a copy of your RW Project for safe-keeping!
2 - start a project afresh with just one page (change the folder in RW, not anywhere else!) and see if you can publish with the same login and password which you have been using up to now.
Let us know your results here; then we can tackle the folder naming issue. Good luck.