Your VPN is working as intended, it creates an isolated, encrypted tunnel for your internet traffic. As a result, it typically blocks access to your local network (LAN) to reduce the risk of local network exposure or snooping.
When the VPN is active, your device is essentially placed on a separate virtual network, which can make it unable to detect local devices like a printer on the same physical network.
Fix: Enable “split tunneling” or allow “local network access” in your VPN settings.