Cannot get my Windows 10 Edition code

Hello,

 

I realized few days ago, that I can get Minecraft Windows 10 edition. I bought Minecraft in 2011 I'm trying to do so, but I keep getting the error:

 

"Error! It looks like we've temporarily run out of gift codes for Minecraft for Windows 10. Don't worry though, more codes should be on their way. Please check back later!"

 

Only three days left and I start to worry. I'm aware of similar issues here: https://bugs.mojang.com/browse/WEB-1690, but for me it is not fixed.