Thanks for the feedback. We've had a bit of trouble with ProGuard. 1.0.1 is already submitted to Store and waiting approval. Thanks for your patience! :)
I got the 1.0.1 update and still the problem persists.
Updated to 1.0.2 and it works. Even purchased pro version.
Thank you - there are still a few things to fix, so please be patient with us! How do you like it so far?