Looked at your site on Silicon iPad Pro 12.9 — your site loads but the overlay takes a while to dismiss and then content is cut off / missing when scrolling before it eventually shows. With orientation change the site becomes unresponsive for a duration (10-20 seconds) then finally changes orientation, content can also disappear then. Same with opening the Bookmarks bar it yields the same result of unresponsiveness, due to resize.
Unfortunately, the logic of the library chosen that this Bric uses is not very good (discussed in another thread). So unless this Bric gets updated using a different and better approach, I would suggest not using it until then, as your visitors could potentially have a bad user experience reflecting poorly upon your site.
You may also wish to try and better optimize the christmas-celebration.jpg it’s 1.7MB which seems excessive, could probably be below 300KB using ImageOptim, etc., with no perceived quality loss.