Pagination does not work

Hello Elementor experts,

I added a pagination on a webpage with a loop grid, and then chose Numbers for Pagination and Page Reload for Load Type. However, when I clicked the paginated numbers, the it does not switch to the next page. For example, when I click number 5, it does not go to the webpage 5.

Then I changed the Load Type to AJAX (Numbers for Pagination was not changed), and it works when I click the numbers. However, the webpage flickered for about 2 seconds and then wen to to the next webpage.

Does anyone know how to resolve the problems?

Thanks in advance!