OK. In that case, the process is pretty much like this:
- Go into the file manager and delete the entire
siteprofolder, and remove the files.htaccess,index.phpandweb.config. - Take a fresh copy of the WordPress code and upload it on top of your existing site, replacing any existing files: How to fix a corrupted WordPress installation
- Create a file with the name
.htaccess(through the file manager) and paste these contents into it: htaccess – Documentation – WordPress.org
If you did it correctly, your old WordPress site should now be up and running again, and you can login again and manage it.