Direct Tv satellite with one receiver and use App on other tvs

I called today to cancel my Directv service and go to YouTube tv to save a ton of money each month.  The representative told me I could keep one receiver and use the Directv app on my other smart TVs instead of paying for each receiver.  He deactivated all but one receiver and now I can’t get service on any tv except the one with the receiver. I have 5 smart TVs of various brands and none have the direct tv app - some have the Directv streaming app but we can’t login to that and it appears that is a different service.   One tv does have the app, I can login but the remote won’t do anything once the app is open.