@wrbird I never got any more feedback from tp-link. I don't remember exactly when it started working but it's on Firmware Version 1.1.3 now and has been mostly fine for the past few months.

@Kevin_Z I'm having this issue with the same devices (HS103) the Mac addresses are 68:FF:7B:E8:D5:6A and 68:FF:7B: E8AD:9A. No option to change the remote access. No errors given. Device firmware...