Not working

Always when I add my Battletag, it say invalid Battletag.
Maybe the App just support the US-Battletags.
If yes, then Player in Europe (like me) and Asia can ignore this App, until theres a Support for all Regions.
I give 1 Star until its fixed, then I rate it again.

Tigra Watanabe about Diablo 3 Mobile Companion, v1.0