Can not play minecraft for windows.

I migrated my account ,have offical launcher and tried them but still demo(BE version).

Hi there ★星川ｶｸﾞﾔ welcome to the community forum! Christopher here, an Xbox fan just like you and has been on Xbox for years already. I would really love to make your day by helping you out. Did you migrate your account?

If you have any other Launcher on your computer other than the one found on Mojang's official website you must first do the following:

1 - Delete the Launchers that exist on your computer that are not official Mojang;

2 - Restart your computer;

3 - Download the original software again and install:

https://www.minecraft.net/en-us/download

If you don't have another Launcher on your computer or have already deleted:

1 - Open Minecraft Laucher;

2 - If you are already logged in, click on your image and Gamertag in the upper left corner of the screen and then on "Logout";

3 - If you are already logged out or not logged in to your account, delete all accounts registered in Launcher by clicking on the "X" next to each account;

4 - In Minecraft Launcher, enter the email and password of your Microsoft account!

Have you tried contacting Mojang about this issue?

Looked through some of the help articles - man the information is confusing.

Anyways from what I'm inferring from the posts is that you can play Windows 10 to Windows 10, and Pocket Edition to Windows 10 and that's it right now.

https://support.xbox.com/en-CA/games/game-titles/minecraft-help-on-different-devices

"You can play Minecraft: Windows 10 Edition Beta with other devices running Pocket Edition, such as Windows 10 and Windows Phone devices. Right now, you can play local multiplayer on Minecraft: Windows 10 Edition Beta. Soon after the launch, online
play will be available for Minecraft: Windows 10 Edition Beta."

http://support.xbox.com/en-CA/games/game-titles/minecraft-windows-10-edition-beta-faq#a5eebb2f431442ff850f552a209f44ed

Can I play online with other people on Windows 10? Or on different devices?

You can play with up to four other people running Minecraft: Windows 10 Edition Beta or Pocket Edition on your local network. You can also play online with up to four of your Xbox Live friends in online multiplayer gaming.

Since it is the Windows 10 edition you can only play it on a windows computer. Minecraft is not a Play Anywhere title.