Going from uploaded image to Express page doesn't load

Going from Genfill preview in FF to Express page load fails. Steps below:

I trialed Photoshop and decided to browse Firefly after getting an email with subject "Welcome to Adobe Firefly, your new way to create". 

Clicked upload image in the email CTA

Uploaded my image

Did some adding and removing with genfill

clicked the three dots to edit and add text in Express

The pages never load. I'm stuck on https://firefly.adobe.com/loading-express with a logo animation.

Tried this with one of Firefly's images instead of my own and it works as should. With own image, I get no where.

So—something is broken. I have noticed this pattern where links from tutorials and emails (whether it takes me to Photoshop or Firefly, Express) simply do not work or load.