demo.freshrss API errors

[math-GH]

demo.freshrss.org

Allow API access: Yes

But the Google API has a 500 error

If Allow API access: No

Fever and Google API: 500 error

What I would expect:
If API access: Yes: Google API would not return an error
If API access: No: Both API return : FAIL: HTTP error 503 Service Unavailable

This is a screenshot of my instance: