I had the same problem. Little repeater box unplugged for 6 months. Easiest way is to do online chat. Got disconnected from a phone call and they didn't call back.
Explained in the chat app and the nice person sent a reset signal to the box. Worked in about 1 minute.
Note: they will need the s/n number. I took a photo of the bottom sticker with my phone (the numbers are small, then I could zoom in) and took that to the computer to type in.
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