Unable to fetch fingerprints

When I add my host (in SSH keys pipelines setting) and try to fetch fingerprint I get the following error message:

"Unable to fetch fingerprints, check host SSH connection and try again"

This started to happen last Friday, and since then is not working anymore. No changes were made on the host and I can SSH normally. Other repositories have been set with the same host before Friday are working.

Looks like is not able to find the host by some network reason? Could you please check it?
Host is 'qa-smartplugin.youbora.com'

Thanks.