Welcome to the EMO Community Forums, @racingsport2 . . . I have moved your new topic to this thread to discuss issues with petting EMO.
In your situation, you could possibly be putting too much pressure on the petting sensor which could make him respond defensively or not enough if he does not respond at all. Please see this topic for proper petting techniques and try that. If nothing works, you should contact Support at service@living.ai with a link to a video of what he is doing.
My best to you.