Hello,
On your site, I can see 4.28.1 theme version, the latest one is 5.0.2. I do not see the problem with logo or menu. Have you downgraded theme version?
Please note, that the theme needs to be activated using purchase code in Theme Options.
If you your site is active we would recommend you to create staging site and try to update theme there because we made a lot of changes in PHP, JS files and also theme CSS. That’s why if you have some custom styles based on the old version they would be changed. If everything is ok after update on the staging site then update production.
Here you can find changelog – https://themeforest.net/item/xstore-responsive-woocommerce-theme/15780546#item-description__changelog
Regards