Daily Mission,Steel door guild coins

Hello. i am sorry for trashing the forums with such a questions. i am new to the new L2 since i only played C1-C6.

the Daily mission - i got quest mania 2/2 - available

when i press receive reward it says "please try again later" in the system window. wth is this?


also regarding guild coins. ive seen some videos with people exchanging and gambling with guild coins. but i dont see any options at the Adventure's Guide. the only thing that i see is him selling scroll of escapes for 50 guild coins.

Daily Mission,Steel door guild coins