We are running Omanda SDN Controller Software v5.3.1 on CentOS Linux release 7.9.2009 (Core). Upgrading to Firmware 1.1.0 or 1.1.1 will cause issues if you don't open up port 29814 on the Omada SDN...

Replying to myself here. The two EAPs that I thought were faulty were actually OK once I connected them to a network with a DHCP server. I thought that EAP660HDs had a fallback address configured as...

@vGeek79 Just RMA'd my second TL-SG3210XHP-M2. First one died December 7, 2021 so with Christmas break and global shipping delays we didn't get a replacement (under warranty) until January 31, 2020!...