I bought the Innovv K2 camera system and installed it without any issues about a week ago. I installed the 256 GB card and formatted it using the app and connected to the DVR over wifi. Since then it records some videos, I can download a few to my phone, but every few days it says SD card read error, and asks to format. Each time you format it wipes all the other videos. This has happened with 1min, 3min and 10 min clip settings. I have micro SD Class 10 U3 card. It works intermittently. I am ready to return the unit but wanted to exhaust all options. I have reached out to Innovv support and no response yet. Help please.