Dadao Product Reviews&Referral

I liked the app and made a purchase. However, I noticed that the emails sent to customers end up in the spam folder. I believe this might require making some domain TXT and CNAME records. Unfortunately, I've been trying to reach customer service for three days with no success. In conclusion, I like the app, but I haven't been able to reach customer service. If I can resolve this issue, I will continue using it. That's why I gave it 4 stars instead of 5.