Most likely, it's a screen resolution issue. Have you tried contacting the app developer? Sometimes there's a simple fix on their side or a beta that they may allow you access to. Worth a try. A more extreme solution might be rooting and running a rom that changes the device id allowing more app compatibility. On the Nook Tablet, without changing the id even when rooted, there are tons of apps missing from the play store.
APK extraction, especially for paid apps is a sticky subject around here. There's no way to get around it that isn't breaking copyright law or a TOS, which will also get a thread closed.
, follow them and prosper!
Did you forget to kiss a Mod today?