The FAQ section is not functioning normally,
feeling small jerks on opening:
web URL: https://new.stiryum.com/#faq
I can see that you do not have the newest version of Betheme.
Please, update it and see if the problem persists.
If this will not help turn off all of the plugins, refresh your cache, and check if the problem persists.
Moreover, if you use a child theme, switch to parent, and recheck it.