Express is unusable as it's forever stuck with error message "Something went wrong Please wait — we’ll reconnect you when it’s fixed."

As of a few days ago, Adobe Express has become unusable on my work laptop. (Dell) 

What happens:

• Adobe Express opens normally.
• I can open an existing project.
• If it’s a video it starts loading.
• The editor becomes very slow and eventually displays:

  "Something went wrong. Please wait — we'll reconnect you when it's fixed."

• At that point I can't edit or download the project. (Two buttons on the corner of the screen show no text and can’t be clicked. ‘text’, ‘brands’, ‘templates’, and ‘add-ons’ buttons don’t open when clicked either.
• If it’s an image I can move around existing assets but after a few seconds of doing that the same error message shows up.

What I've already tried:

• Restarted the laptop
• Microsoft Edge
• Google Chrome
• Edge InPrivate mode
• Edge Guest mode
• Different Wi‑Fi network

Important detail: The exact same Adobe account and project work correctly on my phone. I can open, edit, and download the project there.