Skyconnect zigbee2mqtt ember pairing doesn't work

On my raspberry pi 5 I have been running zigbee2mqtt for almost a year without any problems. My adapter is skyconnect. Everything has been working correctly for about 2 weeks, but I can no longer pair any devices. I have not been able to solve this.
I assume that the latest version of Z2M needs the ember driver.

What I did successfully:

  • I flashed my skyconnect from version 7.1.1.0 build 273 to the latest version 7.4.4.0 (zigbee). The new name ZBT-1 is now used. I assume that the ember driver was flashed with this?
  • I installed the latest version of zigbee2mqtt 2.0.0-2. Here ZBT-1 is set as follows:
    serial:
    adapter: ember
    port: /dev/serial/by-id/usb-Nabu_Casa_SkyConnect_v1.0_-if00-port0
    baudrate: 115200
    rtscts: true

Everything works perfectly, BUT PAIRING STILL DOES NOT WORK.
Does anyone have a solution?

I forgot to mention: about 2 weeks ago I updated Z2M to 2.0.0-2 (without reading the documentation first).