When the Solaredge inverter IP = 192.168.1.206 tries to connect it does a few tests. Ping www.google.com is one of the first tests. It fails. From what I see in the router/firewall its not blocked. I have a pcap file, taken with a tap at the FiOS provided router. I added a rule allowing 192.168.1.206 ----> any. The trace shows the ICMP ping request but (no response found!)
I don't seem to be able to post the pcap file here.
Really need a lot more info than what you have given.
How is panel connected to Internet?
Is it direct to router that connects to Internet?
Is it getting IP via DHCP or hard coded?
Can you ping panel from other devices connected to same router?