YITHEMES on "[Plugin: YITH WooCommerce Ajax Product Filter] "reser filters" button doesn't work"

Hi
I've installed and activated yith-woocommerce-ajax-product-filter plugin.
And after adding filters to my shop page, that works properly at fist sight,but then I found out that
"reser filters" button doesn't work as it should (after hitting this button the only thing that I've got was endless spinner)
http://ptscr.com/ax0wh0 _attached screenshot of my problem.
Please,help me to figure out this question and solve "reset filters" button issue.
You can visit my site and take a look at my problem http://www.pumpkinandlavender.co.uk/shop/
By the way,when I tried to find some correct solution by myself,I met several helpful articles where people were
discussing the same issue and the problem was in server's configuration related to php variable $_SERVER['HTTP_HOST'].
Thanks a lot!

https://wordpress.org/plugins/yith-woocommerce-ajax-navigation/

Hi, I tested your website and works fine.

Probably you have a connection issue, please can you try if now works?
Have a nice day

Yes now works fine, because I changed from http://www.pumpkinandlavender.co.uk to http://pumpkinandlavender.co.uk. but this is not normal.

Hi,
I tested all but I think there is a problem with WordPress configuration because in local I haven't this issue.
We released a new version today, please can you test it ?
Thanks
Have a nice day