I have been running a wootheme (Canvas) for years now and just switched over to Generate Press. When I’m signed into wordpress, my site mirrors the changes I’ve made to show GP. However, when I’m logged out or on an incognito browser, my old Canvas theme is still showing (http://photographyroundtable.com/)
Does your server have caching? Using cloudflare or something similar?
If the front end of your website isn’t applying your back-end changes (especially something as major as a theme change), then there’s definitely some form of caching going on.
I have tried clearing all chache options, clearing all browser history, logging out of wordpress and logging back in and absolutely nothing is working. The old theme is still showing. What’s weird is that when I try to log into my WP admin page, the GP theme is showing. Nowhere else there.