My tv turns on, but won't let me use Firestick even after resets, tv?

My tv turns on, but won't let me use Firestick even after resets, tv?

My tv turns on, but won't let me use Firestick even after resets, tv? I have chatted with Amazon Customer Service for 2 days and with a new Firestick replacement, Insigna tv or ? won’t accept my WiFi password to connect to network even after 5 factory resets with the old and new Firestick. Any suggestions with Insigna?