Powerline 1200 stopped working - Pick A Plug LED alternating between green and red

powerline was working for me for about a month before I started getting the red light indicator and network speeds slowed & became comparable to my normal wifi. i have one connected upstairs to my router (maybe 20-30 ft. away at max), the other to my PS4 (both in standard surge protector power strips). as i mentioned, there were no issues in the beginning (all lights were green and my network speed was as good as it's ever been downstairs on my PS4) but now the pickaplug LED is alternating between red and green and network speeds on my PS4 are better off with normal wifi. I haven't performed a factory reset, which will probably be my next move. not sure if this is relevant, but I never set up a specific SSID - on my PS4, it allowed me to connect via "LAN" (as i think my console was tricked into thinking it was hardwired) so not sure if setting up a specific one could help after factory reset. Please help! Thanks in advance for your support. :)