Sonoff tasmota doesn’t connect to new access point

[Matteo Cattozzi]

I had a single Ubiquiti access point (UAP nano-HD) but some of my IoT devices were too far away and couldn't connect so I temporarily added a TP-Link access point.

Yesterday I bought another Ubiquiti AP (U6-Lite) and took out the temporary one, all my devices connected perfectly except an old Sonoff TH16 flashed with Tasmota (the others Sonoff Tasmota devices connected immediately to the new AP)

I tried to power cycle it, I re-entered the SSID and password, I factory reset it, I flashed it again whit the latest firmware and even whit an older version (6.5.0) but it never connected.

It can scan other WiFi networks and even my guest WiFi but it can't scan or connect to my main WiFi

I tried to find a solution but I did not find anything, I hope someone can help me

[sfromis]

One thing to try could be a wifi recalibration, `Reset 3` followed by physically power cycling.

Also relevant is using SetOption57 and/or SetOption56 - Tasmota will often try to stick to the same AP unless told to scan again.