I have a MAS (Micollab) running the versión 5.0.216.0 the UCA Mobile it's running perfectly in Android phones but when i want to configure the app after the instalation in the first step where you put the domain, user and password, when i push the test connection fails i thing this issue it's more related with the app version, so anyone that have or had the same problema with iOS, thaks for the feedback!!!