Correct, not my local IP, but NordVPN and some other VPN providers now offer static outbound endpoints at an extra fee where the user gets assigned a static public IP the traffic from that user then always exits from. This is useful, for example, when needing to be able to whitelist an IP at a remote firewall while using a typical internet provider, say Verizon FiOS, whose assigned IPs periodically change. I'm using such an assigned IP, so I know that this IP isn't being used by anyone else (and hasn't been used for a while as I've had the IP now for over six months). Of course, the data center CIDR around "my" IP could have been. If I select a random exit point at NordVPN, even geologically close to my assigned static IP, then Evernote works. No, local software doesn't interfere, and in fact, the remote response appears to come from a firewall device as I get a 403 response.
But what you're saying is that Evernote (on the service side) doesn't block IPs, such as those from VPN providers, as a policy?