Meross Smart Plug MSS315ZF - Setup Mode

Hi,
I’ve just bought a set of Meross plugs (MSS315ZF version). Unfortunately, I failed when trying to switch them to a local MQTT broker. I wanted to use the bytespider script, but despite putting the plugs in setup mode (LED blinks green/orange), they do not start an Access Point to which I can connect to.

The plugs seems to be working fine, s I was able to configure them using the Meross cloud and their official Android app.

MSS315 should be supported from what I understand. Is this a specificity of the ZF version or am I missing something?

Thanks in advance for any suggestions!