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.
Hi, Diegotom. Welcome and thank you for posting. Sorry for the trouble you experienced. Were you able to get this fixed?