My rca 4.4.2 7in table a few days ago ran the DirecTV app, and now is saying it's incompatible, but my table meets their state

Solution
Although you had it installed, It may not actually be meant to work with your device. From the Direct TV site....


What do I need to watch DIRECTV on my tablet?

iPad® 2, iPad® Mini and iPad® Air (iOS 8 or higher required, first generation iPad not supported)

Android tablets running OS 4.2 - 5.x (device and screen size):

Samsung Galaxy Tab 3 7.0"
Samsung Galaxy Note 10.1"
Google Nexus 7
Samsung Galaxy Tab 4 10.1"
Samsung Galaxy Tab S 10.5”
Samsung Galaxy Tab 4 7”
Samsung Galaxy Tab 4 8”

Since your device is not listed, I am not so sure it will actually work with the app.

You may need to discuss this with DIRECTV and see if there is a way to get it to work on your device.

Although you had it installed, It may not actually be meant to work with your device. From the Direct TV site....


What do I need to watch DIRECTV on my tablet?

iPad® 2, iPad® Mini and iPad® Air (iOS 8 or higher required, first generation iPad not supported)

Android tablets running OS 4.2 - 5.x (device and screen size):

Samsung Galaxy Tab 3 7.0"
Samsung Galaxy Note 10.1"
Google Nexus 7
Samsung Galaxy Tab 4 10.1"
Samsung Galaxy Tab S 10.5”
Samsung Galaxy Tab 4 7”
Samsung Galaxy Tab 4 8”

Since your device is not listed, I am not so sure it will actually work with the app.

You may need to discuss this with DIRECTV and see if there is a way to get it to work on your device.

 
Solution