I wrote an e-mail to Squarespace support and here is their answer with temporary solution which worked for me: Thank you for reporting this. I can confirm this is related to an issue with the content below an Instagram block not rendering on our end when site wide animations are enabled, and when the Instagram block is near the bottom of the page. We’ve reported this to our Engineering team, and they’re currently prioritizing the issue. For the time being, you can disable sitewide animations in Design > Site styles > Animations. From here, choose "None," and then hover over "Done" and click "Save" in the top left corner. This should resolve the issue and allow all of your footer content to load again. I want to set the expectation that this is an alternative solution you can use temporarily, rather than a permanent fix for the exact issue. Please keep in mind that there are many moving parts we need to address before we roll out a solution. We thoroughly test all fixes before they’re released. As a result, we can’t guarantee how long it will take to fix issues like the one affecting your site. Also, because of the volume of reports we receive, we can’t always follow up personally when the issue is resolved.