Why is my Devolo flashing red?

Hello,
I had this issue, you just need to take 2 powerline adapters and plug them into a power strip to pair them, then press the reset button for 10 seconds and then for 2 seconds, and it’s done, everything works perfectly.
Have a great day!

Hi,
have you read the documentation?
It's certainly time to do so.
Please try to re-pair your boxes.
After that,
if your electrical installation is not compatible, it's better to forget about powerline adapters.

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And... there you go!