ok thanks Maxim,

like i said i could not find the following-

/Library/Application Support/Autodesk

/Users/{username}/Adlm

/Users/{username}/Library/Application Support/Autodesk

/Applications/Autodesk/Mayaxxxx/ (for Maya products)

/Library/Preferences/Flexnet Publisher/FLEXnet

but i will now reinstall 2017.3