if i try to go in minecraft java i can only go in the demo version, and im on a mojang account.
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We're tracking this issue in MCL-16570, so this ticket is being resolved and linked as a duplicate.
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Please check out this article: https://help.minecraft.net/hc/en-us/articles/360029643892-Can-only-play-Minecraft-demo-Java-Edition-
If that doesn't help, please contact Mojang Support.
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📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki