Hello, @mohamed aly,
1. I have just checked your site now and the filters are working perfectly fine on the Arabic version as it is working on the English version for me, so you must have the cache issue nothing else, please try to clear the cache and check back.
2. In order to solve your issue please navigate to Dashboard >> Appearance >> Widgets >> 8theme active product filters >> Add into Shop sidebar and check the Clear all filters button and save settings. See the image for a better reference: https://ibb.co/9W8mzZf
Regards 8Themes Team.