I have a problem trying to add my versa dosing pump to mobius. The app keeps asking me for serial number which i have inputted but it still won't let me add the dosing pump (purple checkmark). I tried called tech support but the don't have a solution. I have tried resetting it numerous times and still a no go. On my android phone, I keep getting this loop. It just keeps asking me to input a serial number which I have.