HELP! Website reverted to old template...can't fix by myself!

Of course I just started an ad campaign yesterday! My website https://www.schlosserdesigns.com has reverted to my original template. My product is still there, but all the customization is gone. I think I've got to update stuff, but I have no clue how, and my website manager is out of pocket for the next month.... Any suggestions as to who could help me with this/or what to do to fix it myself?
Thanks!
Erin

This looks like somebody has partially upgraded your site, i.e. copied the new files over the old ones, but not actually run the upgrade script to upgrade your database.

This would also explain why your site appeared to revert to the original design. I'm suspecting that your template wasn't built properly using the template over-ride system and so has been over-written by the new files. The only way to get it back is from backups.

Do you know of anyone who could do it for me?

Do you have a backup of the site or the template?

Honestly I don't know. I think I have parts (the parts I customized) but not of the whole thing. Unless the server automatically backs it up occasionally.

You web host may have a backup of an earlier state of your site. You wouldn't want them to roll it back (unless there's been no activity on the site recently) but it may provide access to the template files and any other mods you've done that haven't been structured properly.

As an aside, didn't whoever started your upgrade, back them up first. Backing up files and database is an absolute priority before starting an upgrade.

That's the thing, no one has started an upgrade. It was upgraded a year ago, and hasn't been touched since, excpet by me when I was adding in my products and pricing. That's why this is a little confusing. If I have the web host roll back the template to an earlier version, will it keep all my customers in the database?

BTW, Thanks so much for your help!

Whether it was intended as an upgrade or not. It very much looks as though somebody has dropped a later version of Zen Cart than you were running on top of your site, thus starting an upgrade. If that wasn't done by you or with your knowledge, I'd recommend asking your web host who else has access to your hosted space.

If your web host is able to roll you back, then you will lose anything that has been done, including new customers, since the point to which they roll you back. That's why I'm suggesting that it would be safer, if possible, to get the files that are in any backup (including done by your web host) so that the template files can be extracted from it, put into a proper template structure and then re-applied to your site.