The Connectivity check should be left at 184.108.40.206 port 53. This is the address of one of Google's name servers and the port is the standard DNS port. If Test host & port button fails, then you do not have connectivity to the internet. You can't fix it from this page.
Can you connect to OctoPi with SSH from another system on your local internet? If one of your other systems is running Windows, then you can install PuTTY.
You mentioned that you set a static IP address. This is normally not necessary as the default is to use DHCP to obtain an IP address, netmask, gateway, and DNS servers. If you manually set a static IP address, you also need to manually supply the netmask, gateway IP address, and DNS server IP addresses. Failure to set these correctly would result in not being able to connect to the internet.
If you answered yes to the SSH question above, then please provide the output of these commands on your OctoPi system: "ifconfig", "route", and "cat /etc/resolv.conf".
If one of your other systems is running Windows, open a command prompt and provide the output of the command: "ipconfig /all". If one of your other systems is running Linux, provide the output of the same commands as the OctoPi system.