I agree with the advice from Mark and David.
Through experiences with my Celestron Evolution 6, I can say that the best first step is to check the firmware in both the handset and the mount. And then make sure that the settings in the handset are correct.
A good starting point might be this link:
https://www.cloudynights.com/topic/6...-an-avx-mount/
Look in particular at the post by Michael Swanson. His website is a goldmine of information about such matters. It was certainly very helpful to me in sorting out my problems.