@Hank21 

Thanks for the swift response, I'm bit confused now as per the document it says we have to create a operator user and then use that to generate CSRF token once that is generated use https://CONTROLLER:PORT/CONTROLLER_ID/api/v2/hotspot/extPortal/auth endpoint to authorize client when using external portal authentication.

When I checked open api, I'm able to login and generate refresh and authorization token using client secret and client id, however api/v2/hotspot/extPortal/auth is not available in open api documentation and version of open api documentation is v1 and not v2, so what is the difference between this 2 apis and which one should I use incae of omada cloud controller ?

I have also figure out that I can use below endpoint from open api to authorize client using mac.

/openapi/v1/{omadacId}/sites/{siteId}/hotspot/clients/{clientMac}/auth

  @Hank21 

is there a way i can edit the voucher login portal page using api? i want to display the remaining voucher that was used.
Lets say im going to access a hotspot using voucher code, it will route to a login page where i will put the voucher code and login, after i login it will route a page where it will display the time remaining of the specific voucher that ive entered. And is there a way i could put a pause button and add a code to it?

  @Fae i cant even access the url http:ipaddress:443/openapi/login on my oc200 controller. I tried to test the ping of the ip address on the network tool and it has connection but i cant browse it. Website cant be reach