I haven't used Multiverse since last year, and now the hover previews are not showing up anymore. It only shows a small white triangle/arrow and a small white circle.
Windows 10
Microsoft Edge 130.0.2849.56
Console shows the following error on mouseover:
application-137202e2…e7b3db181be2a6.js:4
Mixed Content: The page at 'https://www.magicmultiverse.net/cardsets/145/cardlist' was loaded over HTTPS, but requested an insecure XMLHttpRequest endpoint 'http://www.magicmultiverse.net/cards/117508/mockup'. This request has been blocked; the content must be served over HTTPS.
Workaround, use http instead of https to access the site (e.g. http://www.magicmultiverse.net/cardsets). The preview then works.