When configuring a SR520 static IP address on WAN port, popup box directs user to delete and re-enable NAT. After disabling NAT no button exists to re-enable NAT. If CLI is used to fix issue, CCA states firewall is not supported. Issue started with CCA 3.0.
Factory reset needed to correct issue but then it starts all over again.
IOS version: sr520-advipservicesk9-mz.124-24.T4, CCA Version: 3.0, 3.0(1)