[Report] Card pack disappeared?

[200LWU]

I went to open a card pack from an issue I just answered after clearing space in my deck, and then I was greeted with a red box of text saying something along the lines of oh no, something went wrong. Upon refreshing, I have neither an unopened pack nor 5 more cards.

[Frisbeeteria]

oh no, something went wrong

That means you won't be getting those cards. At least one cause for that message is opening packs too quickly. There may be other errors.