Android File Transfer for Mac

Hello,

I cannot connect with android file transfer for Mac and My Note 5- It says try restarting or reconnecting. ANybody else get it to work? I have it set to MTP and I have restarted; it never works. I chatted with Samsung and they said to install smart switch which will install the drivers, when I did this I got a note saying AFT would likely not work and it did not. So I cannot transfer anything...

Help

thanks,