I get an error "Simplify Token not correctly generated"

I have had this plug-in installed and have ran the sandbox versions without any issues. I have just re-joined the community because the plug in stopped working. I get the error message "Simplify Token no Correctly Generated" I have contacted Simplify Commerce regarding this issue and they say that the plug in is not connecting to them to create the token. This brings me back here. I am a bit cranky over this as I am losing income as it sits broken. any assistance would be greatly appreciated.