@noelmm Hi,
All devices shows offline in Manager web means we can't establish the mqtt connection between IFP & Manager web, it looks like a network connection issue.
We would suggest whitelist "AWS domain" instead of its "IP address",
this is because AWS used a long list of dynamic IP address instead of fixed ones. If they still want to use IP address, they may need to whitelist hundreds of IP address, that would not be an efficient way, the list might also be changed in the future.
let me know if you have any further questions, thank you