Why are the changes not visible?

Question

caching

Hello, I took a Wordpress site for support (Katana theme, Sucuri WP Plugin is also installed). There is a task to add checkboxes to the form. Added. Checked without logging out - everything is ok.
Logged out - no checkboxes.
Same nonsense with google analytics code.
I uploaded a piece of code to the end of head (using filezilla).
As a result, under the administrator at the front, there is a code, but logged out from other machines - no. What could be the problem??
Thank you.

Answer 1

Clear the cache, it's probably there.