Let me know if the problem persists
OK there was a chance the first part which resets the SMC might have allowed the keyboard to work. Go to System Preferences / Keyboard / Input Sources what is listed there?
If it is not correct or nothing is listed go to the Keyboard tab and click on Change Keyboard type.
Hello there! If you like I can give you a call and see if its your mac or mouse.
Did you change the Keyboard type?