Hi Ronald,
Thank you for your post.
Its working now. Did the above and when i came to your question at the bottom, it prompted me to check the EWC interface on the controller which was to be used for AP traffic. after troubleshooting and playing with config I never ticked the AP registration tick again, thus, AP's wouldn't know where to connect to.
I feel rather stupid but I am happy I could sort it out. thank you