Hi mrdinky, there isn't a corresponence email address however you can send a text to 07533 051809.
Keep it short eg problem description remote control.
Your message will go into a queue and a representative will respond to you as soon as possible. It may take a few days, but as you say at least you have the app on your phone. Have you got a spare phone or tablet you can let the kids use for the remote app for now?
The Service you do for others is the rent you pay for your room here on Earth - Muhammad Ali