FortiGateVM Azure

hello,

I configured Fortigate VM on Azure after creating a resource group, selected BYOL license type and everything was fine I was able to access the GUI of FortiGate. Did license and everything was fine I went to interfaces>wan interface > it was set to DHCP I changed it to static and I lost the connectivity to the device how can I restore that back to dynamic from Azure and restore connectivity to device? cannot connect both SSH or HTTPS to public ip after changing interface from Dynamic to static.