Oh no! It sounds like you might have encountered a known issue: bit.ly/3IHZq4T. You can upvote if the issue hasn't been resolved & add a comment if you have any new info to provide. If you think this a new bug, here's how to submit a report: bit.ly/3o1d4GN ^FF
Please visit our bug report site to see if the problem has already been reported: bit.ly/3AOzbYS. 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! bit.ly/3o1d4GN ^FF
Try deleting your cache and use a different browser/device if possible & ensure you have a good internet connection. You might also check to see that JavaScript is enabled, and try disconnecting any VPNs you may have running. You may also need to disable any browser addons. ^FF
Is this issue happening with only certain texture packs from the Marketplace, or is it happening no matter which pack you choose? Also, is this happening only on Realms, or are you seeing this error on your single-player worlds as well? ^FF
Please visit our bug report site to see if the problem has already been reported: bit.ly/3AOzbYS. 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! bit.ly/3o1d4GN ^FF
I don't really have a why you can't have the profile name you have chosen besides the filter is finicky! I would suggest picking out another name that you like! ^BT
Since you said it's a single player world, it's likely that there's corruption happening which can be caused by many reasons. We're unable to fix corruption since it's made locally on your device. 😿 ^BT
Let's have our Technical team have a look! To keep your information secure, please complete our request form at aka.ms/Minecraft-Support so we can quickly and safely assist with your question! ^BT
Please visit our bug report site to see if the problem has already been reported: bugs.mojang.com. 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! aka.ms/MCBugTrackerHelp ^BT
Oh no, let's have our Realms team take a look! To keep your information secure, please complete our request form at aka.ms/Minecraft-Support so we can quickly and safely assist with your question! ^BT
Let's have our Accounts team take a look! Please send us an email at aka.ms/Minecraft-Support and we will assist. Remember to attach your Transaction ID and account name / Gamertag. ^BT
That's no good! Let's have our Technical team have a look. To keep your information secure, please complete our request form at aka.ms/Minecraft-Support so we can quickly and safely assist with your question! ^BT
Let's have our Accounts team take a look! Please send us an email at aka.ms/Minecraft-Support and we will assist. Remember to attach your Transaction ID and account name / Gamertag. ^BT
Usually when you get the demo message, it means that you're logging into an account that isn't linked to a game license. Please take a look to make sure that you're logging into the right account, and you should be able to access your game! ^BT
Let's have our Realms team take a look at it! To keep your information secure, please complete our request form at aka.ms/Minecraft-Support so we can quickly and safely assist with your question! ^BT