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The solution is for the developers of the app to start from scratch and write their app for your device/OS level. As has always been, the app developers choose which BB model numbers / OS Level combinations they will support. With so many combinations, most developers choose to not support everything.
With BB10, it was made more complex due to BB10 not being an evolution from BBOS, but rather a totally new OS. Hence, rather than merely porting their app as with legacy, with BB10 the developers must write the app completely from scratch.
In any event, the best place for your inquiry is to the developers of the app...for they control it's destiny. You can usually find contact information for the developer in AppWorld -- if you access via PC/browser and NOT log into your BBID, you should be able to find it.
Occam's Razor nearly always applies when troubleshooting technology issues!
If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.