Saw that one of the requirements for this week was a "51-79 dungeon" so I load up Baelsar's Wall (LV60) and clear it and I get no seal so I do the Vault (LV57) and get the seal at the end.

I thought that it was a typo and it was suppose to say 51-59 but no it's correct, the problem is the game doesn't regard dungeons ending in 0 as valid dungeons.

So why say any dungeon between 51 and 79 if all 60 dungeons are invalid???