If it’s only that temp in the room, that is way too cold for the machine.
Basic temperature range is 16C-24C.
It does sound more like a power supply issue. You should email support and see if they can find anything in the logs (posting here no longer opens a support ticket.)
I measured the temperature today, now it is getting warmer, it was 17 degree C, but after one use, it is still not turning ON. Will have to give an hour rest before we can switch it ON again.