I cannot log into the now tv apps on phone and iPad. I have reset password and it logs in online aNd on now tv stick but not on app
Bit of a long shot have you tried to delete the NowTV App and download a fresh version of the NowTV App from your device Apps Store ?
If you haven't maybe try it on either on your iPhone or iPad has a test.
Once you downloaded the App, power down your device for say 30 seconds, then reboot your device and sign into the App with the same account details that works on your NowTV stick.