Unable to trade in duplicates

I suddenly find myself unable to trade in the duplicates. After I swipe up, the screen just freeze there.... I tried to remove and install back....remove account and restore the account....toggle 3g network or wifi.... all cannot seem to work... Btw...I am playing the android version.

Thanks for reporting! I fixed this issue this morning. However, there are a few other bugs in the current version that need to be fixed. I'm currently at issue 3 of 6 ;-) If there aren't any big show-stoppers, I guess there will be a bugfix update start of next week!