I don't know the number offhand, but you can only have so many talismans, runes or shards. It sometimes triggers an error when you start a new level but if you hit the cap when buying a soul or skillshard then you get a generic purchase failed message.
well, i have this problema while now. Sometimes i think, they just forgot toput on the lock over apreviously bought warrior/mage/guard soul. Sometimes, i am able to buy one of these sone of that seems to correctly display these 3 souls.
The time limited restriction has been removed from the Troopers tab of the Store until this is resolved.
Anyone who can't buy from the Troopers tab when you have enough badges, please pm me directly. Thanks.