No pagination working and infinite loop if ajax disabled

Hello!

I have installed WooCommerce Product Filter by WooBeWoo plugin and I have huge problem.
Actually two.

I have created new set of filters. In list of filter results I click on second (or any) pagination page. In dev toolf I see two POST requests to admin-ajax.php file. In result I go to selected pagination page or not, depends on which admin-ajax.php request ends first.

Second issue is when I disable ajax in filter options, I go to infinite loop that reloads my page. In result I can’t do anything.

Please help ??