I'll be brief about what's happening. On the 7th of this month, my Minecraft started to show errors, claiming that I don't own an original copy of the game, even though I purchased it a long time ago. Furthermore, the game launcher states that I can only play the demo version, despite already owning the original Minecraft.
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We're tracking this issue in WEB-7179, so this ticket is being resolved and linked as a duplicate.
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