Love the app.. purchased it some time ago on this very retina MacBook Pro, from which I am now typing this message. Your implementation of computer authentication, however, seems to fail me, when I operate my MacBook with the WiFi Airport disabled (90% of the time). With the wifi disabled, I get the following error message when I boot-up my Mac:

Note: should I attempt to log into my AppleID account as requested, via my attached usb-ethernet dongle, I'm greeted by this error:

Since every other application is able to verify my device and computer, including the uber picky Messages (aka iMessage, aka iChat), I'm left scratching my head wondering why an inexpensive alarm extension is causing me so many freaking headaches! There are plenty of more expensive applications I have bought & installed which don't perform a this type of comprehensive system authenticity check on each launch... as a result, I have continued to enjoy the privilege of using them... even in the space of operating my Macbook with a disabled WiFi Airport!!
Perhaps you could relax your system check rigidity, and simply allow me to login & prove my identity once??
As a professional courtesy, I thought it more reasonable to request support here, before sharing an emotionally charged review extolling my frustrating experience in the Appstore! Perhaps this issue has a workaround? I haven't seen anyone else post a similar report, however, it's taken me 4-6 months to become upset enough to finally do something about it.
Please advise,
Jadik