Cannot log into Trello desktop app on macOS, and no responses from Atlassian support

Question

I am unable to login to the macOS Trello desktop app. I can login through browser, and the iOS app remains logged in. Atlassian seem unwilling to acknowledge the issue, respond to others experiencing the same issue, or offer a direct link to getting support from a human.

Adil Ghanty · Answer

Edit: clearly this site doesn't want to accept attachments in Safari, and I'm not prepared to switch browsers to upload a file. Hopefully you're familiar with the failed login screen. Please let me know if not, and I'll find another way to get it to you.

Adil Ghanty · Answer

Reattaching, as the first failed!

Adil Ghanty · Answer

@Gaurav Kataria thank you for the response.

Please could you provide some steps on how to do this in Safari?

The attached screenshot is what I see in Safari upon attempting to log in - as you can see, there is no cookie acceptance dialogue. If I have previously disabled this for Trello / Atlassian auth sites, is there a way to manually enable this again?

Cheers,
Adil