Participation in RTX Raytracing Beta

Hello,

I would have very gladly participated in the beta, but unfortunately I am not able to claim my copy of the Windows 10 Edition for my Minecraft, which I tried to claim because of my possession of the Java Edition.

When I use "Claim your free copy" in my Mojang Account, I get the following error message:

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!

A quick google search reveals that this is an open issue since last year and also current entries in forums tell that I am not the only one who is affected.