I got hit by the rank reset bug at the beginning of the june season. Today I got a message in arena that I would get the full mythic rewards because of this. I clicked the claim button. 10 generic packs appeared (they were blue with a white arena logo but no set branding) and when I went to the packs tab of arena I clicked open 10 and a blank dialog box with one button labeled "OK" appeared. I clicked on OK and then I have no packs.

I am hoping that you can resend those rewards. It was frustrating enough to get hit with the rank reset, then have to climb back up in rank, and not even get the qualifying points for the high rank in June. Now the packs that were promised are not actually there. This is a crazy bug to have and I would have hoped that the fix was not also bugged.