Replaced dead tuner - Channels not working correctly

Running Channels DVR on a raspberry pi with the image from here. My tuner died, got another one and now it is like Channels does not see a tuner or something? I can go on my apply TV and tune channels but I cannot record because the record menu never shows up. It is like the shows in the future guide are a dummy button because they don't do anything.
The old tuner no longer shows up as a source when going into the DVR via a windows browser. The new tuner is in there however if I try to watch anything via a web browser off of the DVR live it won't even show the guide for that tuner.
When I try my watch tv off of my apple tv it shows the guide and will tune the channels but if I try and select a show to record in the future guide it never pops up the record menus. I can click all day and get nothing. What is going on?
When I click on the tuner in the DVR settings it does not have a remove option like my youtube tv does.
I have no idea what is up. I rebooted it and still nothing. It is like the new tuner is there but I can't use it properly.
If I test it with the hdhomerun app tuning channels with it works great. Looking for some help to get this new one to work properly.

Assign guide data to new tuner on dvr web UI

Jackpot! Thank you, I would have never figured that out!

I had a dead HDHomeRun that was replaced with a 4K flex, but all my passes are looking for the old tuner which does not exist any longer and the recordings fail. How do I reassign the guide?

Once your old tuner is removed reboot your channels DVR and then the old one should be totally gone. Go into the gear of your new flex under sources and setup the "guide date" there on the menu.