@Kevin_Z 

Thank you for your reply.

I have the AV2000 2-Port Gigabit Passthrough Powerline Starter Kit TL-PA9020P KIT.

The adapter is plugged into the wall next to the router. There's an ethernet cable from the router into the adapter. The adapter is flashing red and green from the powerline light. I cannot find anything which tells me what this means.

I've tried moving the adapter to a new plug, using a different ethernet but nothing changes this status. 

Many thanks.

@Kevin_Z 

Well, thee router and adapter are maybe 10cm apart and connected by ethernet, so there's no issue with the signal. The extenders are 10m on the same floor and the other one is the floor above. There's no internet running through the powerline anymore. My NAS has lost connection from the adapter on the floor below. No amount of resetting, moving, plugging into a new socket is working. I've even put the extender and adapter side-by-side on the same plug socket and there's still no internet coming through.

When I switch of all the TP-Link adapters and extenders the internet resumes from my router. So there's something wrong with these adapters... 

What are my next steps?

Just to add, according to this video, there isn't a red and green flashing light on the powerline LED. It's either green, red or off. Mine alternates red and green flashing. I bought two kits to extend the internet around my house but right now I'm without internet where I need it.

https://www.youtube.com/watch?v=axmzo8ZE8H8

What can I do to get some support? I've tried everything suggested. 

@Kevin_Z 

But I don't understand how this can work perfectly for 5 days, nothing in my environment changed and now they're useless? I have literally tried everything on these things and I cannot get them to work now when previously they were fine. Even holding the pair button for 15 seconds doesn't change the status light.

I've seen others complaining about this same issue.

Do you have a technical support line I can talk to?

Hello,

same problem here with AV2000

it was working perfectly fine until this morning : powerline leds flashing green and red like christmas tree.

nothing was changed, not electrical ppliance added in the house, try to swap loacation, pair, re-pair, re-re-pair. seems like the two CPL extenders won't talk to each other anymore....

I am stuck and wasting my time. HELP!

Nico

@Adam- 

Just return the adapters. They will not work stable due to poor firmware. Support here will not help you. I was in the same situation, wasted time, contated tp-link support which gave poor answer and returned them to the shop. They will not improve firmware and did not since tow years. They should not sell such a poor product.

@Adam- Indeed, will return them.. thanx !