I double checked the coverage map and Amazon assured me that I am in a solid coverage area.  I purchase the mailbox sensor and installed it as prescribed for metal mailboxes before I placed it down on the street which is 700ft or so from the house.   No connection streetside or sitting on the front porch of the house.  Have tripled checked all settings and connections.  Even did a reset cycle and re-enrolled the device in the app.  No connection.   Unwilling to spend an additional $60 for a bridge since I am 700ft away and the bridge is an indoor device (also not getting great reviews).   Other than persuading my neighbor across the street to install a Ring camera (and keep it open), is there anything I can do?   It's clear the "coverage map" is misleading and is not based on actual signal strength readings.