Fist things first - let’s get the terminology corrected so you’ll be in a better position to search & understand:
- You have a Conbee II coordinator, not a router
- You have powered Zigbee devices that act as routers, not bridges.
They are zigbee 1.2, but it shouldn’t be a problem, as long as you realise that these won’t switch to a different route automatically if they lose connection to their router.
With the above in mind, you shouldn’t be pairing them to the coordinator since they will lose signal as soon as you move them to their final location.
Instead, place them in the room you intend to use them, open up HA, find the closest router device page > 3 dots, then click “Add Devices via this device”
Since these are battery devices, they tend to “sleep” to conserve battery, sometimes even during the pairing process. To prevent them from sleeping while pairing, short press the button on the device every 1-2s until pairing is complete.
A few things to note:
- The new batteries might have taken a hit to their voltage with all your previous pairing attempts & the fact that your sensors were trying to communicate with the mesh & failing. Be aware their lifetime will probably be impacted.
- Your Ikea motion sensor will probably also benefit from the above steps if it’s trying to communicate with the coordinator directly. Check the ZHA map to confirm whether it’s connected via a router or direct to the coordinator.
- Make sure you don’t cut power to the powered routers or you’ll destroy your mesh & probably have to re-pair the Aqara devices.
- It’s always a good idea to add more routers
- If you’re still running into issues, have a read through this.
For what it’s worth, I also have the old Aqara door sensors running on Z2M with no issues. They’re still on the original battery from Ali, despite running for 5 years.