I have had a lot of recent faulty avtech dvrs of all models , the common fault is network setting to an unusual network starting with 10. And various 4 digit port number , theses are on units a couple of years old , is there a fix or should I just scrap them , I’m glad I stoped installing avtech , but I was using the the alarm push notification on some of them Wich was a brilliant for customers to self monitor , any one used anything simmiler