OK so... you got a locked pack in log-in bonus (a GUR?? Lucky you!!)
And you already had one in a trade?
When you add an unlocked pack to a trade, it locks temporally until the trade is over, if successful, you trade away the pack and get the trade-in stuff. If not successful, the pack unlocks again, back to original status.
So you opened 2 packs, It first opens always the locked packs. One locked opened.
Then you opened the next. As the second locked one was not a locked pack but was in the trade, that cannot be opened, so game opens the next, which was the unlocked.
2 packs opened, the locked and one unlocked.
Still 1 pack locked in possession, the one in the trade! You can't open that pack.
So, you restarted the game and no packs. Check if the trade was successful and that's the reason your pack is not there anymore.
Also try to restart the game, again.
Did I understood the matter?
WE WANT LEGACY TOURNAMENTS BACK !!! If you also want it, show your support http://forums.pokemontcg.com/topic/55966-feedback-making-it-easier-to-get-the-cards-you-want/
My 1st pokémon VGame http://forums.pokemontcg.com/topic/59894-my-1st-pok%C3%A9mon-videogame-nds-diamond-story-and-help/
Foro en español, también existe: http://forums.pokemontcg.com/forum/2-español/