I've been able to submit new entries to

https://eucloud.tech/

https://buy-european.net/

I've also found other problematic ones:

https://euro-stack.com/ (I couldn't understand how to submit a new entry)

https://www.goeuropean.org/ (all submissions fail with an AirTable error [sic] that the workspace is at the record limit)

Euro-Stack.eu is a scam that promotes European software using:

    A wordpress.com based website hosted in California by the US company Auttomatic

    Fronted by Cloudflare, a US monopoly (this is probably part of wordpress.com paid subscription)

    Edits its letter to EU Commission asking to support European IT industry in Microsoft Word.

    Converts it to PDF with Adobe software

Interesting. Thanks for the info