Well apparently you have a USB MIDI available also.
If it doesn't work may want to try that. You can set Clock setting to always sync with USB.

Actually sounds like if the 1/8th" jack isn't connected it defaults to the USB port next for clock.
So you could probably configure RB to send a clock .. then you could sync your arpeggios to RB tempo clock.
just a thought, I think I'd go that route myself, unless you need it Live or something. Though having a little drum machine comes in handy sometimes.

I do not work here, but the benefits are still awesome
Make your sound your own!