text message forwarding not working

I noticed text message forwarding was not working on my MacBook Pro, so I tried turning it off on my phone and turning it back on. I get a message on the phone asking for me to enter the code sent to my computer, but no code is being showing on my computer. Both devices are shown properly in my iCloud account.

My new iPad Pro needed to be set up, so I tried the same thing with it, on the same network, and it worked as it is supposed to do.

So I tried with a Mac Mini that I also have, and it has thew same issues at the MacBook Pro. No code is shown on the Mac Mini. Both computers are running 10.13.6.

Anyone have a solution for this. I searched the forums but only found a post from about a year ago that never reach any resolution.