There is not enough information to provide a useful answer. Information like switches, RADIUS server (ClearPass/other), configuration used, logging output would be needed to find out what is going on. Best to work with your Aruba partner or Aruba support to go step by step through your configuration.
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Herman Robers
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If you have urgent issues, always contact your Aruba partner, distributor, or Aruba TAC Support. Check
https://www.arubanetworks.com/support-services/contact-support/ for how to contact Aruba TAC. Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba Networks.
In case your problem is solved, please invest the time to post a follow-up with the information on how you solved it. Others can benefit from that.
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