Sonoff zbdongle E as zigbee router

Configuration Zigbee
1

I installed this firmware:

But using the web tool, at the end of the firmware installation, I can no longer connect to the key.

Then how should I connect it to the Zigbee coordinator?

I use Z2M

2

Pair to Zigbee2MQTT:

you need to press boot button for about 5 seconds, until the green led start flashing.

3

I can’t see boot button: I have to remove cover on ITEAD SONOFF ZBDongle-E?

4

Yes, boot button is inside