Unable to pair Aqara Door & Window sensor

I guess this is just a little insignificant bug in the app code. It normally says “Add Door and Window Sensor”. And the name of the device, in this case “Door and Window Sensor”, is filled in automatically. So maybe just the Swedish translation is missing.
The name of the device can’t be changed while the pairing process, just after the device was paired successfully with Homey.
Please inform the App developer about this little bug in the dedicated Aqara topic in the forum:
[APP] Aqara & Xiaomi Smart Home - Simplify your life with a smarter home

About the general pairing problems.
– Try not to change the name of the device while pairing process
– After holding the button until the LED starts flashing blue, release the button and wait

If this doesn’t work, you can try the following points:
– A battery powered Zigbee device can only be added to the Zigbee controller, if it’s in awake condition. Sometimes the device falls asleep again, when the pairing process isn’t finished. It’s possible to keep the device awake if you push the button every 2-3 seconds.
– Restart the Homey Aqara App and then try to add the device again
– Restart Homey via the Homey Smartphone App, wait approx. 10 minutes and then try to add the device again
– Perform a PTP. Pull out the plug, wait approx. 15 minutes, insert the plug again, wait further approx. 10 minutes and then try to add the device again