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 email@example.com Related articles My access to the Vendo Back Office is blocked. Where can I resent my credentials? How do I configure a Site in NATS How do I start Integration with Vendo 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? How long does it take to integrate?