The green and red lights were on solid for 2 seconds then turned off.
The instruction states that the green light should flash after 8 to 10 minutes.
What instructions state the 8 to 10 minutes crap? ignore that, when the two lights stay solid and then go off, in most cases the reset is complete, the green light won't come on after the reset because the S9 SE comes without any pool/worker details by default, so you will need to find it's IP address and type that into your browser, enter your pool url/ worker/ password and hit save, wait a few minutes that miner should be up and running assuming it doesn't have any other issues.