My wp-admin has disappeared. Please help.

Hello, I recently made the fatal error or building a site for a friend in WP.com. We learned when trying to launch it that it should have been done in WP.org. I managed to recreate most of the site in WP.org and it’s that version that is mostly visible online at the above page/URL. However there are a few links I need to fix and a few adjustments I need to make and I’m not able to log back in to www.remarpro.com via the site URL. When I add /login/ or /wp-admin/ to the end of the URL I don’t get a dashboard and I can’t see any of my pages. Uh-oh! What on earth has happened?

The page I need help with: [log in to see the link]