Sent a certified letter with return receipt on 06/30/2025 through USPS to Vivint —and USPS today, Tues July 08, 2025 tracking site said “Forwarding order for this address is no longer valid. Forward expired” I have no idea what that means. Will attempt to call Vivint (not successful July 03) and USPS tomorrow am (7/9/25). Very frustrated and disappointed in difficulty contacting Vivint.