1) Do you use the Elementor Pro? We faced this issue on the sites where users used Elementor Pro and tried to edit mini cart content using elementor settings, but it’s not the Elementor element and it causes issue when Elementor adds that content in addition to the mini-cart area.
Could you, please, provide us with correct WP Dashboard access to your site to check the problem?
2) First of all, do the backup of your site and DB before the update. After that go to Dashboard > Updates > check Check again button > check the theme and press Update. After update go to the same section and choose XStore core plugin and press Update. That’s all. You should not lose any changes after that. If you want you can provide us with WP Dashboard access and we’ll help you with the update.
