Good afternoon. mimo option has disappeared. I have 4 xe75 pro, one of which is xe75 pro v2 firmware 1.2.9. the other 3 deco are v1 firmware 1.2.5

I recently added an XE75 satellite node to my already existing 2-node XE75 Pro mesh network, and it has caused the OFDMA/MU-MIMO settings to disappear. Likewise, if I unplug the power to the XE75 node