I invested a small amount of money to Airing on Wefunder, after Indiegogo investors. Don't know the date exactly, maybe 2017. I was shocked, I got an email from Wefunder and Airing one day, and I received a refund for my investment, it was sent back to my bank. Happy I got my investment back. But very disappointed Airing scrapped the project of their C Pap. It would have been a great device and investment! I would have given no stars for rating, but I did get my investment back and if you don't give a star you can't review!
Bottom Line: No, I would not recommend this to a friend