Enabling any caching breaks my site. Why?

I was using W3 total cache no problem, then I dumbly enabled some mobile friendly site plug in (or something, I don’t even remember what it was…I know, dumb of me…) anyways I realized that it started calling the mobile version of my site to load even on a desktop. I could never find the plug in to just delete it, there was literally nothing in my plug ins list that was anything to do with mobile, so I’m not sure it was a plug in at all…(still have no idea what I did…) But anyways, I finally figured out that if I disable W3 it would stop loading the mobile version on desktops. So I deleted W3. Now if I enable any sort of caching, my site simply doesn’t work. White screen- nothing. It’s fine in the back end (dashboard) but if I was to visit the site like any other person, then it loads a blank white screen. I’m using wordfence for security reasons and I enabled the ‘basic caching’ and I get the blank white screen. Once caching is disabled my site is back to normal. I tried a WP caching plug in and same. Any suggestions as to why???

Thanks ??

https://www.liveloveguitar.com