Changed GoDaddy hosting, now login page is not coming up

So I have a www.remarpro.com site set up and everything is fine until this morning. I want to create a new site, so I called GoDaddy to upgarde my hosting from the Economy package to the Deluxe package. When it switched over a couple hours later, none of my site’s pages will load, it says “something cool is coming here shortly” and the admin login page gives the graphic “ever feel like you’re in the wrong place?” graphic.(404 page not found error)

I’m not tech savvy so I have no clue how to “ftp” or access the account from a backend, I only know how to login from the admin site. My domain looks like it’s working ok when I ping it, so I’m not sure why none of my pages for the site will show up.

I’ve dug around the forums but everything points towards people that are moving their site, I didn’t move anything, I just upgraded my hosting package so that it would support more domains, now it won’t work. Hopefully this is a simple fix.

PS, I’m not too tech savvy, I didn’t even build this site, a guy did it for me, I can login to my GoDaddy account’s hosting control panel, but not sure what to do here that could affect my the wordpress site he built for me. As long as it’s hosted, economy or deluxe set up, shouldn’t the website simply have kept working after the hosting was live again? Im not even sure which version of WordPress I have because I can’t login to my admin account.

Please help, I’m hoping I won’t have to create an entire new website?