I can't join a non premium Minecraft server.

Glancing over the fact that you just admitted to the developers that you pirated the game AND gave them your username, cracked accounts cannot join premium servers and premium accounts cannot join cracked servers.

Non-premium servers are of course unsupported and hence this report will be closed as invalid.

Thank you for your report!
However, this issue is Invalid.

You are currently using a non-authorized version of Minecraft. If you wish to purchase the full game, please visit the Minecraft Store.
We will not provide support for pirated versions of the game, these versions are modified and may contain malware.

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