Caches Break Everything

Hello everyone,

I’m a rookie with WordPress and I have been developing my blog site with many trials and errors. I’m having a serious problem and nothing I have tried worked so far.

When I’m logged in with my admin account, everything is in order. Yet when I check from another device or from incognito, every page except the front page breaks. When I hard reload the page, everything goes back to normal but when I refresh or come back to that page again, it breaks.

I have tried deactivating all the plugins but didn’t help.

I’d appreciate if you can guide me through the problem.

Many thanks!

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