Our developers have been inspecting your website and we found a weird bug in Adobe Muse 2017.1 release.
In your site, when you combine fixed and fluid breakpoints, when exporting the page Muse is outputting the widget code twice. That is the reason that makes the widget break and this probably will happen with any other third party widgets.
Please check the current screenshot where we changed all the fluid breakpoints to fixed, that solved your problem and made the widget work ok.
We are not sure if Adobe will fix this soon, so while waiting, you can use previous workaround or downgrade Muse version.
- This reply was modified 5 months, 2 weeks ago by responsive-muse.