Hi Race, this problem here is when you have also an extra http auth password next to your normal OpenSprinkler password – and when you can login via Browser but not using the Android app (which just had a recent minor update which seemed to introduce a bug). In your case it rather seems like you have to find a way to reset your password. I am not sure how you can do this, probably also depends on what OpenSprinkler hardware you have (OSPi or other). The default password is “opendoor” (without the quotes), just in case.
If you google for opensprinkler and password reset, then there are quite a few other folks asking.
Hope this helps a bit.