Hello, @Mina Adel,
1. First of all, I can see you are using the old version of the theme 8.3.3 and the very latest version of the theme is 8.3.5, so please update your theme and the core plugin to the very latest version and check back.
You can check the theme changelog here: https://xstore.8theme.com/update-history/
How to update the Theme: https://xstore.helpscoutdocs.com/article/63-theme-update
If after that the issue will still persist then please try to check it once by activating the default WordPress Theme like Twenty Twenty Two, just to make it sure that the issue is with our theme or not?
2. I have just checked your site now and found the Contact Menu is there and working fine on your site in both versions (English and Arabic), here are the screenshots: https://postimg.cc/zbQ9n2p9 https://postimg.cc/CR4XvxmC so it must be the cache issue at your end nothing else.
Regards 8Themes Team.