1/ I do not see any problem – https://gyazo.com/79f11a7fe4114e7cc61d3049a5aad40b
You can disable/enable this content via XStore > White Label Branding > Hide registration form option.
2/ Thanks for the screenshot. Provide URL of page where the problem persists.
3/ Go to Plugins > try to disable “Cookie Notice & Compliance for GDPR / CCPA” plugin.
4/ Do you use server cache or CDN? Clear all cache.
5/ Every additional element on the page increases the dom structure. To reduce it remove the elements, there is no other way, unfortunately (for example limit the number of products in the slider, or remove some elements etc).
Question about CDN you need to pass to your hosting provider.
Please open up new topics for new questions, then you will get an answer faster.
