Issue with Frient devices and Sonoff 3.0 Coordinator (ZHA)

[frigid parcel]

Today I migrated my ConbeeII over to a Sonoff Zigbee 3.0 Dongle Plus-P

Before I migrated it, I flashed the firmware with Koen Kanters' latest coordinator firmware:
CC1352P2_CC2652P_launchpad_coordinator_20221226
https://github.com/Koenkk/Z-Stack-firmware/tree/master/coordinator/Z-Stack_3.x.0/bin

It migrated without any errors and all I had to do was re-pair all my zigbee devices starting with wired devices from closest to the controller to the furthest and then all the battery devices.

Everything reconnected without issue except for my Frient Smart Plugs (inc power monitoring) and Electricity Meter Interface
https://frient.com/products/smart-plug-mini
https://frient.com/products/electricity-meter-interface

These worked perfectly before with the ConbeeII, but no such luck with the Sonoff dongle.

Is this something that I should raise as a bug with the dongle firmware or does anyone know if it's a known (and already resolved) issue?

[late sinew]

What happens now when you add them?

[frigid parcel]

The screen stays on the Searching for Zigbee devices swirly thing and the device keeps blinking in pairing mode.
Eventually they time-out after a couple of minutes.

[late sinew]

Those ones are weird to pair aren't they, gotta hold the button for like 12 seconds if I remember right

[frigid parcel]

I normally hold it until it flashes.... I'll try longer.

You're a genius.
I held it for 6s and get a single red pulse.
After 12s it gives a double pulse.
at 20+s it goes mental with a solid red then regular pulses when you let go.

And it paired 😄

Where do I send the beer to say thanks? 🙂

[late sinew]

Yeah it's the really long one you need 😄

Haha you keep it for you! 😄