Hello Matheus,
In regard to the first part of your question, we'll need to know how you are adopting the APs (Option 191, controller host command, DNS, etc).
I would recommend you start by disabling the provisioning policy rule for this AP and attempt to adopt it using one of the above methods. If it adopts without issue then investigate the provisioning policy rule.
Here's a link to some more info on why this may not be working: https://extremeportal.force.com/ExtrArticleDetail?an=000089583
But to answer your question, yes the AP should adopt without enabling NOVA.
For the second part of your question, not any usb cable can be used access these APs via console port. Please follow this link to the cable required for AP console access: https://extremeportal.force.com/ExtrArticleDetail?an=000083712
I hope this helps,
Christoph S.