How to stop showing up more posts below the "next page" numbers on Category page

Hi there,
I sent this question a few months ago. I have been asked to give you access to my site which I did. but there was no contact. Does that mean that this problem cannot be fixed and shapely will always have such a problem?
my website:

Hi there

Hope you are having a good day and thank you for your question
Please deactivate all third party plugins and try again your problem, most probably this I conflict with third-party plugins.
Once you deactivate all plugins please check your problem again, if the problem is gone then this means it was a plugin conflict. Now, start activating plugins one by one and same time repeat your problem until your problem appears again, now you know which plugin was in conflict
Colorlib Support Team