You probably touched the circuit board with the power plug while connecting the trainer to the power outlet. If that happened - your device is fried and thus permanently damaged. That’s why the red light isn’t blinking (although the device might still “hum” as if it were working properly).
Honestly, Elite did a really poor job designing the trainer. The power connector isn’t insulated from the circuit board at all. When you miss it by a few milimetres, you have a decent chance of destroying the device. Sadly, none of this is even mentioned in the instruction manual.
I contacted the manufacturer, who acknowledged the issue and advised me to return the device to the shop for a refund. Bear in mind, this was the second time I had to RMA the device. The original product broke down completely by itself after an hour of usage.
All in all, after a month without a functioning trainer, I’ve simply switched to Tacx Vortex.