Account creation fails every time

I’ve just dowloaded the app, and have tried to create an account in order to sync my iphone w/ my Mac. I’ve tried 4 times to create the account (both from my iphone, and from my Mac). Each attempt is unsuccessful, and I get NO feedback from the sign-up process indicating which data element is invalid (is my email address invalid? is my password invalid?, Are special characters not allowed for my password?, etc.). I’m clueless as to why I’m not able to create an account, so this app is getting deleted from my iphone and my Mac.

jfakult about Any.do - To do list & Calendar