Theme developer goes out of business with no warning or guidance

We learned yesterday that our theme developer, Solopine, suddenly shut their doors after ten years with no warning, notification, or guidance. There are already some elements of the site not working. There are going to be a lot of sites left out in the cold. They had beautiful themes and great support. They did not notify anyone, I only found out while trying to submit a support ticket. Of course, this is scary at what will be involved to get a new theme and if the migration won’t make a mess of all our pages/posts. Any suggestions or guidance? Any travel blog themes that this community recommends?

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