OAuth login fails

[sitic]

The OAuth login fails when I try to login from this url in Chrome.

I accept the OAuth request (it's also in the list of accepted OAuth apps) and get redirected to
https://tools.wmflabs.org/supercount/?oauth_verifier=xxx&oauth_token=yyy

and I see that a cookie with the name OAuthUserAnalysisTool is set. But the site reports:
An OAuth error occured. Details: Failed to successfully login. Reported error: Curl error:

Thanks for all your work

[cyberpower678]

Interesting. Added to the list of things to fix when I return from my Wikibreak.