How can my husband and I both connect to the BMP+ on our own phones. It doesn’t appear to let us both activate and access the device. Obviously it is not a single use / single person product. So we both need to be able to activate the device when the other person is not around. I cannot use my husbands phone to activate the BMP+ as he is not always home and visa versa. Please advise what we need to type in to get both of our phones connected.