Collection bonus problem blue all star

There is no problem it just has not registered yet...sometimes if I sign out then sign back in or if I play a few games then go back to my collection and scroll over the completed collection then it will register and give me the reward...it has taken a couple hours for a collection to register for me before but I always get the bonus....Eventually...This problem happens alot when i complete multiple collections within a short amount of time or when i complete a collection by purchasing the final few items at the same time and sending them to my collection together.