BTT Snapping Feature not working with Final Draft 9

Hey all! My current issue is in regards to the snapping feature, the thing where I drag a window to the side or top of the screen to automatically resize it. This function is compatible with all of my macOS apps except for Final Draft 9, the screenwriting software. If I drag the window anywhere on the screen, BTT will not recognize or resize the window.

I'm using a 2011-model MacBook Pro with OS 10.13.4. My version of BTT is 2.426. I'm no longer eligible for upgrades to BTT unless I purchase another license, and I will strongly consider upgrading if this issue is fixed.