Make sure that the theme was updated to 5.2 version then clear cache and check one more time.
Try to disable all the third-party plugins that do not come bundled with our theme https://xstore.helpscoutdocs.com/article/36-included-plugins and check if you still have the problem.
Let me know the results.
As I can see via browser console, you are using 220.127.116.11 version of the theme https://prnt.sc/ninpyu
What version of the theme do you see via Appearance > Themes > XStore theme details?
Please provide temporary wp-admin access so we can take a closer look.