HUT Master Pack Purchase via Draft Champion Collectable

[C0LT0N99]

Hello everyone, thanks in advance for the help...

As the title suggests, I am trying to purchase on of the HUT Master packs using my Draft Campion Collectables. Unfortunately, whenever I try and purchase one of the 90+, 92+, and/or 94+ packs using the Draft Champion Collectable, I get an error code (see image).

Does anyone know why this is happening? Or what I may be doing wrong?

[youngg9797]

A draft collectible isn't a master set collectible. They don't work with those sets.

[C0LT0N99]

But when I search the auction house for the master set collectables, only the draft ones appear for sale.