Cache issue |

Hi Community, I faced a problem, while I was fixing the site.

I make changes in the code through the WordPress, but I don’t see any changes on the frontend. Is there some kind of server cache, because when I add a GET parameter to the link the cache is reset and all changes are applied.

If it is not a cache then what can it be ?
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The page I need help with: [log in to see the link]

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