Problem with registering atlassian-connect-express addon

Hello! Since today morning i’m experiencing problems with registering my atlassian-connect-express addon on my JIRA Cloud server. Yesterday everything was fine. Neither hello-world example or my addon works. I’m installing addon through
https://{user}:{pass}@{jiraHost}/rest/plugins/1.0/
endpoint, but it responds with 401. The credentials are 100% fine. The strange thing is that on other jira cloud servers it’s totally installable. Our jira host contains hypen (web-pal.atlassian.net), maybe this causes the problem? Cause i’m also getting the error “Add-on not registered; no compatible hosts detected”

EDIT Strange things are. Everything working just fine now. Close the topic please.