I've updated to 2.27 on both a MacBook running Monterey 12.3.1 and a MacPro running Mojave 10.14.6. I'm trying to use AcrossCenter on each to do the usual mouse and keyboard sharing, just like when I ran the MacBook on BigSur. AcrossCenter appears to be functional, but one-way only. I can move my mouse from Mojave to Monterey, but once there, the mouse gets stuck and can't cross back. I have rebooted both computers and tried to re-pair. It won't work.