SmartLife temperature and humidity sensor – pairing error after replacing the 2.4 GHz battery

Hello

I have a temperature and humidity sensor which, until now, had been connected to the Ewlink, Home and Smartlife apps. As the batteries were very low, I had to replace them with new ones. Since then, the sensor has refused to connect. It is detected by the Smartlife app, where I try to add it again. And when the whole process is almost complete, an error pops up.
The network is 2.4 GHz
Sometimes I enter the name of my Wi-Fi, and other times the network name generated by the sensor itself. When the app detects it, a process begins, but it always ends in an error. I’ve been struggling with this for a few days now, and the AI isn’t much help either.
Can any of you offer any advice?



Best regards
AI: Please provide the exact make and model of this sensor, or alternatively post a photo of the label or a link to the exact same device.
I don’t know the manufacturer; I bought it from a Chinese seller
AI: What exact error does SmartLife display at the end of the pairing process, and in which mode are you adding the sensor: quick pairing/EZ or AP mode, i.e. via the Wi-Fi network created by the sensor?
The Wi-Fi icon flashes slowly and goes out before the saving process is complete.

@josevoypl
Did you set the correct date and time after replacing the battery?
Cheap rubbish – it doesn’t have an internal backup battery!

Hello.

Actually, it isn’t possible. You can only do that once you’ve connected to the app. I’ve got another one, exactly the same, except that the display doesn’t have that coloured line.
And the one I got after replacing the battery connects without any problems.

@josevoypl
1. Change the pairing mode to EZ (Quick Pairing).
2. Completely remove the ‘old’ device from the app.

That’s exactly what I did. I uninstalled it from the app and also deleted it from my phone.
I’ll try pairing it via my computer, if that’s possible.