OB with midi controller

Hi, I have an Akai mpk mini controller (not a midi host) that I would like to use along with my DT when I have it connected to Ableton through overbridge.
I could not get it to work, however, and I found this in OB’s manual:

When using Overbridge with Ableton, you must not activate the USB MIDI Input and Output in the Preferences menu. To disable, select Options in the menu bar, then click Preferences. Select the MIDI Sync tab and disable all outbound and incoming MIDI messages to and from the Overbridge device.

Why is this the case? Is there a workaround?