Well, Rakuu, you're sort of a jerk huh?
Anyway....since the developer hasn't replied to anything in a long, long time, and, as I just told you it's broken in Android O, I suggest you stick with Android 7 and never upgrade again, unless the developer does. To bad you'll be left out in the cold in about 2 months.
I spoke to the Dev not too too long ago and the app is still being developed though at a much slower pace.
I'm sure something will turn up before or shortly after O is officially released.
To adapt something to work on an android O preview beta is not really a priority I imagine.