Paramount Plus error code 3005 usually happens because of internet issues, app bugs, or corrupted cache files. The quickest fix is to restart the app, reboot your device and Wi-Fi router, then try streaming again. You can also clear the app cache, update the Paramount+ app, or reinstall it if the error keeps showing.
I’ve personally seen streaming apps throw random playback errors that disappeared after a simple router restart and app reinstall.
If it still doesn’t work, the problem may be from Paramount+ servers, which I can’t directly verify without checking their live system status.