Hello,
Do update of the theme – https://xstore.helpscoutdocs.com/article/63-theme-update first and after that update the Core plugin – https://xstore.helpscoutdocs.com/article/37-plugins-update
Did you make changes in the files of the theme? What exactly was broken? Could you provide screenshots? What version of the theme do you use right now? Do you need help with the update?
Regards