I had an ADT system installed less than a week ago. The leaflet I was given doesn't even show you how to arm and disarm the system using the fob. The fobs aren't always working which means you have to use the app. The app is only available to one user - you have to by pass this by giving other users your user name and password (a security risk in its own right) choosing an option to copy settings from another device, and "finally click the uncommon answer to keep everyone’s phones active on the app (the recommended answer is if you were for example upgrading your phone)". This was the advice from my installer. My previous alarm system allowed multiple users living in the house to have their own account on the app. The online guides and videos don't show the equipment I have. Today neither the fob nor the app worked and so the alarm went off. Eventually the fob worked. The alarm cannot now be reset. The apps says I have to call support for a remote reset The options don't relate to anything - you have to try various 'press one' 'press two'. before finally finding an option which allows a remote reset. It tells you to input the number on the panel display - but there is no number. If you try to speak to anyone, it just says the line is close and hangs up. The website says that you can report faults using the app. You can't. You have to phone ADT (and the lines are closed). There is an option to remote reset but you need a verification code. I don't have one - so I clicked 'forgotten verification code' and got an error message. My previous alarm was from a local company so I could email or call. My concern about ADT was I would be subject to call centres, pressing options and getting nowhere. That is exactly what I am experiencing. The whole experience has been horrible. I've paid hundreds of pounds for an alarm system that doesn't work and a 3-year contract to pay for the equipment (as a customer you don't own the equipment) and for monitoring for an alarm I can't even arm. Getting help is impossible. Update: a day later, I finally managed to get through to someone - their response? 'Someone will call you back'. You couldn't make it up. Update: Their customer service response didn't address any of the issues I raised, told me to call their support line and look at the videos and tutorials on line. For a faulty system! Basically 'Solve it yourself'. Update: The installer returned. He was unable to find out what they alarm failed. He also said that someone from ADT had deleted the log. He called his manager to get answers to questions we had - for example 'What is the verification code that the app requires for a reset?'. We were told that this was provided in the letter containing key holder information. I checked the letter - it contains no such information. Another update. The engineer came yesterday. Today I set the alarm. When I returned I tried to disarm the system. Once again the fob didn't work and the alarm went off. I've had to call ADT as I cannot reset the system from here and once again I have to wait for someone to call me back. What would happen if I were away? A week on, I am unable to use the alarm until an engineer resets it. It seems the only way to set and unset the alarm is using your phone. Not easy with keys and bags etc. Are customers coming home later supposed to stand outside their door and get their phones out along with their keys to get in? Neither practical nor safe. Another update: After waiting several hours an engineer called. He suggested I was triggering the alarm as I wasn't doing it properly. He said he was was going to talk me through how to press a button and put a fob against the panel (!) I followed his instructions and the alarm went off immediately - not even a delay. 'Oh. Your alarm is faulty'. So the engineer is going to get an engineer to look at it. I would caution anyone thinking about ADT as a provider for home security to think again. I regret ever contacting them and replacing my previous alarm. ADT is a disaster. I've paid for an alarm system and committed to monthly payments for a home that is less secure than before I had the alarm installed. ADT has made my home - and us - less secure than we were before.