Question: Why is my AWS IP address blocked when using it via a VPN to browse?
Answer: Amazon Web Services (AWS) addresses are frequently blocked by different sites and providers. This includes some email services because of the number of abuses and spam originating from Amazon Web Services IP addresses.
If you encountered any blockage when attempting to visit any site using an AWS address. You should request to either change the IP address assigned to you by AWS or ask the respective service blocking you to unblock you. The same will also have to be done if your emails are being blocked.