You can't do 10 missions, cause there is only 7 stages/missions available from what people in IWZ thread said.

Anyway I hope they fix this mess and we get our rewards, thou people on IWZ forums said that nearly every colab with IWZ ends with mess, and often no reward ever given, cause they have some retarded ways of tracking stuff, that often end with them being like "you can prof nothing, we can prof nothing, here a cookie as a recompensation" , or thats what I got after reading a bit there hehe.