If, on the Access Journey when referring from the Splash Page to Instagram (for authentication) you receive SSL errors, then add the following Firewall Rule
On the Winbox interface for the devices in question, go to IP > Hotspot > and on the Wall Garden IP List click the +to add the entry:
- Action: Allow
- Server: This should be the MAC address you entered before
- Dst. Host: *api.instagram.com*
