That's definitely no good! I'd recommend checking out our installation FAQ to see if this issue can be resolved: msft.it/6011w6ail. If you're still running into these errors, then please reach out to our Support team for further help: msft.it/6012w6aim. ^FF
You're likely logging in with the wrong account information OR you're trying to login to the Mojang login still If you have trouble launching the game post-migration, remember to use the Microsoft login option & check out this FAQ: msft.it/6010w6age! ^TK
Don't worry we have a fix for that, however, it's a bit to much for a tweet so let's get you up to our team! To keep your information secure, please complete our request form at msft.it/6019w6a5V so we can quickly and safely assist with your question! ^TK
The last bit of your Tweet Cut off for me but judging from the sounds of the issue we're gonna need to take a closer look. To keep your information secure, please complete our request form at msft.it/6015w6aed so we can quickly and safely assist with your question! ^TK
If you've already migrated your Mojang account and aren't seeing the Migrator Cape on your account, then please reach out to our Support team, so we can investigate further for you: msft.it/6011w6ajT. ^FF
Can you give me a bit more information regarding the Marketplace issues you're running into? A screenshot would be amazing if you're getting an error. ^TK
Yea, that definitely sounds like you should bug report or look for someone who has already reported it and upvote it. I can't imagine it's a connection error to the server, but I could be wrong. Any troubleshooting steps you have tried? ^TK
Did you make sure to tie the correct account to your Java Edition? This may be best for Xbox/Microsoft Support to look into. msft.it/6013w6a3h or msft.it/6014w6aO6. ^TK
I wish I knew to be honest with you! I'm gonna have you submit a ticket up to our tech team so that we can take a closer look: To keep your information secure, please complete our request form at msft.it/6013w6az1 so we can quickly and safely assist with your question! ^TK
That's really no fun, I'm sorry to hear about that. Worlds are saved locally, which means the data isn't attached to your account, and unfortunately we don't have any way to recover that data. Please check out msft.it/6015w6qfx for info on backing up worlds. ^NS