I'm afraid worlds are stored locally on devices and in no way tied to your account. Sadly we're unable to restore those if they have disappeared from the account. We recommend checking out how to backup and save worlds here msft.it/6018bfXR4 to prevent issues like this ^AC
This appears to have been a temporary issue. You should be able to connect to those servers now. If you're still experiencing this issue please let us know and we'd be happy to look into this further. ^AC
Please make sure your version of the game is updated to the latest version then try to join that game again. If you're still experiencing issues please let us know and we'd be happy to investigate further. ^AC
Please check out our technical support tips here msft.it/6017bfntS If for some reason that doesn't help please let us know and we'd be happy to look into this further. ^AC
Please visit our bug report site to see if the problem has already been reported: msft.it/6014bfnsg. You can upvote if the issue hasn't been resolved. If you think you've found a new bug, visit our help site here on how to submit a report! msft.it/6015bfns9 ^AC
Sorry about any delay you're encountering! We try to respond to tickets as quickly as possible in the order they were received. We appreciate your patience! ^AC
This appears to have been a temporary issue. You should be able to access those realms now. If you're still experiencing this issue please let us know. ^AC
For account issues such as these please contact our account support agents Please send us an email at msft.it/6012bfner and we will assist. Remember to attach your Transaction ID and account name / Gamertag. ^AC
For payment issues such as these please contact us via a ticket. To keep your information secure, please complete our request form at msft.it/6016bfnjY so we can quickly and safely assist with your question! ^AC
Please make sure all your versions are updated to the most recent version. If you're receiving this error then the versions aren't synced. Please make sure the realm itself is updated as well. ^AC