The static IP you configure would not reflect on dashboard when Meraki AP isn't able to communicate with the portal. This is expected when AP doesn't receive ARP reply from configured Default Gateway. When AP cannot reach its DG, it falls back to last active config. I had similar experience, when I tried to Re-IP APs. Steps I followed that helped me were: Change static IP config on AP, followed with switch port config ( put port in new VLAN). This made AP pick up new IP. If you see config- up to date in left bottom corner you can do a packet capture to check on what's happening.
... View more