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I bought Minecraft, played it happily for about 2 days, and bought my brother's. However, my brother's is not like that, but mine came out as offline play, so I tried various methods such as logout re-installation, but it got worse because of experience plate play. Please solve this problem.
Maybe that's when downloaded WorldEdit Mode.
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That was not what I intended. I was doing well and this happened after I downloaded World Edith Mode.
Something's wrong. I'm sorry. Thank you for trying to understand.

Mojang Studios does not officially support mods, so if you are having issue with WorldEdit Mode I would suggest to try uninstalling it (and possibly Forge) to see if it fixes your problem.
If you are still experiencing an issue, I recommend also looking at MCL-11510 for possible fixes.

I deleted lots of forge, modes, and games and downloaded them. A lot.
hum.... Well, I'll give it a try.
I'm not feeling any better. Could you please reopen it?
This ticket is quite difficult to understand, however, you mentioned you are using a translator so it's alright. I think what you're trying to say is that yours, or your brother's account, is still in demo mode after purchasing it. If this is the case, please read through this article for guidance as to why you are experiencing this problem and for potential steps you can perform, in order to fix the issue. If the problem still persists after following the given advice, please contact Mojang Support. If this is not the case however, please let me know.