Hi there!
Sorry for your issue.
I have visited your site and found that the template doesn't belong to us. Please make sure the template can adopt the new version of the SP Page Builder.
We had to update so many things such as bootstrap version, fontawesome version and so on. These has some default application of styles that may change the appearance of your site. If that is the case then we are not responsible for any conflicts.
Would you please contact your template provider if it can adopt latest SP Page Builder as well as the framework?
Best Regards