xybf.appian.community my trail version is not working and its across one moth with no solution.
Discussion posts and replies are publicly visible
Seems like your community site is shutdown due to inactivity, you can login to appian community and restart it.
I did that also but after restating also not able to login.
You must have received an email from community stating that there will be some delay in fulfilling your request due to high request volumes.
I experienced the same, but it can take up to 3-4 days or even a week to fulfill your restart request.
Still you can try contacting communityedition@appian.com if they can provide a solution.