Update - they sent me one that works!
Saunabox responded to my review and sent me a new Saunabox Pulse Pro IR Sauna with red light no charge, which I absolutely did not expect. The product has definitely been improved and is much easier to assemble, and both the electronics and remote have been improved. This one works! It takes 10-15 minutes to start getting warm but we are using it and enjoying it so far. I’ll submit a longer term review after we’ve had it a few months but this is much better than before. Original review: Do not buy from Saunabox! Ordered a Saunabox IR sauna and it didn’t work. Customer Service can only be contacted via email and is very slow. Took about a month to get a new remote and the sauna still would not turn on. It’s a design flaw that it only can be turned on with a remote that has to pair via Bluetooth and the pairing always failed. Then they wanted me to sign a return form acknowledging I wouldn’t get my money back because it had been over 30 days! Thank goodness I had bought with a credit card I went through them and got the charge refunded.