To be clear:
PixelFX Designer and JuiceFX are by "CodeManu" (Manuel Jesús Bolaños Gómez) using GameMaker, which are the programs you said you have problems, telling this due the other post you send on my other apps. And i apologize if you or other people not get replied fast enough.
My apps are PixaTool and VecMaker that are made as solo dev. If you buy any of my apps and you have any problem i will be happy to reply you and in case the problems can't be solved you can always request a refund, in the same way on PixelFX and JuiceFX.
Edit: Realized you rated with 1 star VecMaker. You bought the tool? Any problem/feeddback you can give to understand please?.
The main problem on GameMaker apps are the Mac Version, so people with PixelFX designer who bought a Mac that requested a refund got it. If something not worked as expected, they get the refund. simple as that.
Thats why there is no JuiceFX version on Mac, to avoid all the GameMaker bugs on this OS.
Again, Borion, if the tool not works as expected, you can always request a Refund, all people with a Mac (The problematic version) who requested a Refund got it.