Board Thread:Game Discussion/@comment-29346530-20170824040521/@comment-26829117-20170824083208

There are a number of threads discussing this issues. I lost 100 GC once for a similar issue. It is always best to take a backup of your device on the Sunday evening (not a cloud save, a backup). If anything goes wrong with collecting WTTT on the Monday then you can restore the backup and collect your reward again.