ourgroceries.com doesn't work in Browser

• /e/OS version: 3.0.4
• Device model(s): Fairphone 4
• Impacted Application: Browser
• Affected application/URL: https://www.ourgroceries.com
• Browser/client and version: foundation.e.browser 138.0.7204.97

The problem

Describe precisely the problem you're facing and add screenshots to illustrate

https://www.ourgroceries.com doesn't work when I sign in. I try to view my grocery list and the page is blank.

Steps to reproduce

1. open Browser app
2. navigate to https://www.ourgroceries.com
3. create a (free) account
4. sign in, create a shopping list, try to view it

Technical details

Paste any relevant logs (adb logcat) in the codeblock below if you have any

none yet. I'll try to get some useful logs

Workaround

Open https://www.ourgroceries.com in Firefox Focus and log in. Works as expected / pages are not blank.

Other details

This started breaking about a month ago. I already contacted OurGroceries for support and they are also looking into it. Also, I'm sorry I didn't add labels, I tried adding Bug and Browser but they didn't stick.