I want my customers to receive an OTP when they choose COD as payment methods. How can I achieve that?

StoreHippo allows you to set OTP for offline and cash on delivery payment methods in few simple steps. You can do so in Settings > Payment methods section in StoreHippo admin panel. You can also select validation source for OTP.

For complete procedure, please refer the following link: https://help.storehippo.com/topic/how-to-set-otp-for-cod-orders