Does Vendo need to whitelist IPs if we change hosts servers? Follow No, as long as the callbacks remain unchanged. Please use the comments section below to ask any additional information. You can also contact us at firstname.lastname@example.org Related articles How do I integrate a Dating site? I don’t use NATS, can I use my own affiliate and user management system? How do I integrate Vendo in NATS? Vendo’s client services team asked me to configure a biller called "Vendo Services" in NATS but I only see a biller called "Vendo". Is it the same? Join Link: How do I encrypt the end user password?