That may be for clients that don't support WPA3-Personal (SAE), as it's not backward compatible with WPA2-Personal (PSK).
Could it be that you disabled transition mode on the SSID (opmode-transition)?
The Instant AP-215 does not support WPA3-SAE: The WPA3 opmodes are effective only on the 300 Series, 303 Series, 310 Series, 320 Series, 330 Series, 340 Series, AP-365, AP-367, 370 Series, 510 Series, 530 Series, and 550 Series access points. Other access points will reject these opmodes.
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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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