Cannot configure network interface on Ubuntu

I am missing configuration info in the network dialog box.
MissingThe computer used to get on the Internet but was using a rogue router that had been set up with DHCP.  We turned off DHCP on that router so we can use our main router.
Now the Ubuntu 18.04 machine won't grab an IP address.
Sheldon LivingstonConsultantAsked:
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Dr. KlahnPrincipal Software EngineerCommented:
If you've turned off DHCP on the network then the machine won't be able to get an address.  You'd have to set a static address instead.
Sheldon LivingstonConsultantAuthor Commented:
I had a "rouge" DHCP server that was causing my issue...

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DHCP

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