Config standalone FortiAP-221C to FortiCloud, but missing FortiCloud key
Hello, I am an IT student. I just bought a used FortiAP 221C to learn how to config biz level wifi.
But after search on line, I found topic https://forum.fortinet.com/tm.aspx?m=129796 and in FAQ
Adding Standalone FortiAP to FortiCloud 1. Register for a FortiCloud account at https://www.forticloud.com. 2. Click the “Add Device” link and enter the unique FortiCloud key located on your FortiAP device. 3. Deploy the FortiAP to an existing AP network or create a new AP network. 4. Associate your FortiAP with an SSID. 5. Connect your FortiAP to an internet connection, and wait for it to self-conf
I looked around my 2nd hand FortiAP 221C. there is definitely no FortiCloud key label like

I also found https://cookbook.fortinet.com/forticloud-fortiap-management-without-key/, when I follow step by step.
However, I cannot create an AP network.
I click the right upper corner button Add PortiAP Network, but it keeps popping up a window
System error, please contact our support
Could anyone gives me some clue is it still possible to add my FortiAP 221C without cloud key?
Thanks so much!
