So when I try to do this: Set DHCP Beginning Address and DHCP Ending Address to the same value: the IP address of your HDAThe Airport Express wiki guidance may help.
Its likely your router that's causing the issues.
Can you access by IP address?
Are you using IPV6 in your network? Amahi needs IPV4.
It says the 192.168.0.10 that is displayed on my server isn't a valid start address. Also, I'm not sure why I can't just set to static? And is the article talking about changing the Internet Tab (DHCP, Static, or PPPoE) or the Network tab (off (bridged mode), DHCP only, DHCP and NAT)? Are there any screenshots? I don't know how to do this.