IRobot does not pair?

Hi there
I am a total newbie at homey…I tried to add my iRobot 981 but it just does not seem to work. I added the app and when I ad the device it finds my iRobot fine but then it asks me to pair and that‘s where it ends. I also pressed the home button on the irobot but that doesn‘t help. Any ideas? Thanks in advance for your replies

I solved my iRobot issues by using IFTTT and using Homey to interface with the IFTTT which controls the Roomba. Bit of a work around but works like a charm.