Since firmware version 2018-05-05, match mode is supported. There is a match mode page that explains how the device behaves in such mode.
There are three PDF quick setup guides available: Net Device, Line Device, and Cage.
If you experience an issue with your In/Out device, first visit the troubleshooting page. Then fill the support form through the In/Out helpdesk.
If you don't own an In/Out and have a question, contact the In/Out team.