We have fixed the Windows 10 code error. You can log in to our Mojang account and redeem your Windows 10 code if you purchased Java Edition BEFORE October 18, 2018. If you're eligible, you have until midnight PST on Monday, April 20 to redeem your code. minecraft.net/en-us/article/…

Just now saw this. I was going to go back to playing and streaming it again for a bit but... yah... I already paid for the old version and waited too long I guess? I'm not paying again.