I can not see the HTML Source (as it is showing gabblred texts and chars) to understand which plugin you are using.
If you are using WP Super Cache (if you are using Mod_rewrite or Legacy caching) :
1. Untick the option “Compress pages so they’re served more quickly to visitors. (Recommended)”
2. Delete the cache.
3. Disable Preloading (if you are using).
4. Pages should load rightly. If not, use PHP Cache.
5. In extreme case, disable the plugin, delete the plugins (read their documentation). Try another plugin.
If you are using W3 Total Cache :
1. Activate preview mode (do not deploy it).
2. Test various settings of compression methods.
Why this happening :
Usually good modern servers caches itself. If we force too aggressively or use improper settings, the ultimate result is improper HTML page conversion by the plugins. The mother plugin for both is the same.