Tmap not showing up on private collection

I have a private collection that I use for teaching a class. It has been working well, but just this week the Tmap images are not showing up.
https://neurovault.org/collections/UZSSASIW/
The first 6 images are loading ok (although only with Chrome browser), but the Tstat contrast is not loading.
https://neurovault.org/collections/UZSSASIW/images/460190/
We are only getting blank brains with Chrome (or nothing for other browsers).
This was working just fine a week ago so I don’t know what happened.
Thanks!