Hi Susan,
Thanks for reaching out, I’m sorry to hear you’re having some trouble after performing your backup with Total Upkeep.
Good news is I inspected the URL you linked in the thread and it looks like the site is now live. The most likely cause of the temporary down time was the update process running it’s course.
When you update WordPress core, themes, and plugins they sometimes take a bit longer to complete and will cause the site to stall out. I think you should be back up and running now. You may want to try clearing your browser cache or trying the site in an incognito browser if you’re still having issues.
Please let us know if we can assist you further with this!