Mastery Pass Missing 2 Mythic cards
I just completed level 34 from the mastery pass and didn't received the rewards for having the pass unlocked, only the booster without the double mythic cards. I restarted the game to see if there was any type of delay, but nothing happened.
The conditions in which it happened was that I unlocked it at the same time as I completed my 5ft victory of the day. I receive an uncommon card for the victory, but then haven't received any mythic. Opening my collection confirmed the lack of any new duskmourn mythics.

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Smasher#53124 commented
After the last patch, I'm still not receiving rewards, just missed another 400 gems.
A friend of mine was thinking about paying for the mastery pass, but I already warned her to not do so.
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Smasher#53124 commented
Polan is completely right, I just unlocked lvl 36, in which I should have received the card style for the vicious clown and it was also not computed. None of the rewards are being received.
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Polan27#42883 commented
Same thing happened to me. None of the rewards of the Mastery Pass are registering so you missing more stuff as well same as me.