Starts with the remote but shuts off when a door is opened

My first guess would be that there is some sort of wiring issue happening. I would suggest checking all of the connections to ensure that everything is connected properly, and then find ways to troubleshoot any problems that you have. If you can't figure it out on your own, a professional would definitely be able to help you get it all resolved. Hopefully you can get the help you need.
http://www.jaytondoor.com/garage-doors-coventry/

Garage Door Opener Troubleshooting step by step - YouTube

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https://www.youtube.com/watch?v=b8w2w5ZAc1I
Feb 5, 2014 - Uploaded by Andrew Hill
How to Fix A Garage Door Opener - the opener shown is the Craftsman 1/2 HP ... First start with the obvious and easy to check problems. ... opener button on the wall will open the garage door but not your remote or keypad, ...

Auto Start Engine Shuts Off When open door -

The Top 10 Reasons Your Garage Door Won't Work

customoverheaddoors.net/reasons-your-garage-door-wont-work/

Jun 5, 2014 - To help you troubleshoot your garage door issues, here are the top 10 ...Garage Door Closes Part Way, Then Opens Again ... Automatic Garage Door Opener Runs for a Few Seconds then Turns Off but Door Doesn't Move