I answer your questions here.
Yes, it's always the same.
The CSV I only upload once by me (in the page that I create, I have the option to upload a file, and that file is the CSV ), I show to the user the data in a table.
Yes, is only in one of my pages.
In the CVS I have like 5500 (in total) data.
I will try to solve it with your advices. So thank you very much for your time.