Inputs / Feeds not updating, but I can log in?

Did you try tshark?

There is no such thing as “emoncms on the ESP8266” - emoncms is the software running on the Pi.

Do you mean there is nothing in the emoncms log for that ESP8266?

Please put 3 backticks on a line befoe and after any code, logs etc.

Is this when the inputs stopped?

Something odd there.

The error seems to appear at 04:00 every day. What happens then?

Might be unrelated…

No, Emonhub is something that runs under Raspbian - you would either first flash Raspbian and then use the emonScripts or simply use an EmonSD - a full emoncms will not hurt - just ignore it although it makes it easy to modify the emonhub config.

I suggest you just point the HTTP interface to your EmonPi in the emonhub config.

I’ve recently done it - look at this thread.

Yes.