Can not add a Shelly Plug S

Hi there,

I do not manage to add a Shelly Plug S.

What I do is the following:

- I plug the Plug S and it flashes blue (more or less once per second)

- I open my Shelly app and click on the top right menu and choose Add Device

- I enter my wifi sid and password then Continue

- The app shows my Plug S device

- I select it and click yes when asked if I want to add it to my Wifi network

- I get a message telling me that the connection was successful (to the device AP with the it 192.168.33.2/24), asking device to join my wifi

- I get a message telling that the device was included to my wifi

- I then click Finished

- I get a message on the top of the app telling me that the inclusion was completed

- I then go to my only room and click Add devices

- At this point the list of my Discovered Devices is empty

I do not see the device on my home network (no new IP is allocated)

The Plug S flashes at the same speed than before (more or less once per second)

But its AP wifi is turned off

I have restarted all this from scratch factory resetting the Plug S.

I saw in a previous discussion that the problem was an IP conflict. But here I do not see the Plug S on the network.

My Wifi is 2.4Ghz.

What I am doing wrong?

What is the maximum length of the wifi password a shelly device supports?

What could be the problem?

Many thankd for your help

Hello 66er ,

yes you guessed correctly. It is my first Shelly !

My router is not in the list, but it is my ISP router and I think it does not mean it may not be compatible. The page does not list the router requirement or particularities it needs or does not like so that I could check.

I see that Shelly does not like hidden SSID or special characters. I have none. My password is only alphanumeric with lower and upper case.

Does Shelly have a problem with password length?

I managed for a short while to connect the Shelly Plug S.

I could see it in the app and also on the network.

To do this I used the same router but with some changes in the configuration.

So it may not the router incompatibility but some parameters (maybe).

Unfortunately I could not finish the work to tell what config in particular helped because:

after some minutes the Plug S went offline and is now stuck.

• It is not on the network anymore
• it is flashing very fast blue
• and more problematically factory reset (10 s push the on/off) does not have any effect !!!

So I can not do anything more with it!

The doc says fast blue flash is AP mode, but I do not see its Wifi.

I did not find any indication on other way to reset the device.

Would you know what else I can do to recover the device now?