Need help : fast track m audio + mac os 10.9.5 + PT issue

[Julfr]

Hello,

I have some issues with Pro Tools.

I want to rec a voice over with my Mac OS 10.9.5
5 years ago, I bought a fast track m audio (with pro tools M-Powered Essential 8.0.3). I tried to install PT 8.0.3, but the software is not able to complete the process : the application isn't correctly installed.

So, I thought it was a compatibilty issue : I decided to download a newer version, Pro tools First.

And finally, PT doesn't work at all : when fast track audio is plugged, PT doesn't work. I receive some alerts like "the program doesn't support other frequency (48kHz is my choice, but the software only purposes me 44,1kHz)

Someone can help me please ...? Should I download another update of pro tools ? Or just sell my Mac

Thank you