I have configured an SSID for guest access and splash page to go with it. VLAN usus Instant AP assigned and gets an IP in the 172.31.98.0/23 range... verified internet access from this vlan works. I've configured the Security portion of the SSID to use my splash page and Captive Portal type is Cloud Guest. When I enter my created user's credentials, I receive Login error. Please retry. I've verified they are correct multiple times. Debug logs just say: Oct 30 15:58:58 cli[4319]: <541003> <WARN> |AP IAP-GVL-1@192.168.14.15 cli| Client 00:28:f8:4b:b1:62 is failed to authenticate, failure count is 2.
Edit: I've purposefully tried incorrect credentials and I get "Invalid username or password", so I know it's actually communicating with the login server, it's just not letting me authenticate my credentials.