wcs2228
18
The https://whatismyipaddress.com and https://whatismyip.com websites only use the public IP address to determine location, which would be from your home ISP or from the Surfshark VPN server. From your testing, VPN is connected and working.
However, smartphones and other devices can use different methods for your location, such as scanning nearby wifi, scanning nearby bluetooth, advertising ID tracking, accounts (especially Google) tracking location history, etc., that are then passed to smartphone apps (e.g., Google Maps). The VPN client may also have DNS leaks. Chromecast and other devices and Netflix and other apps may have hardcoded Google DNS servers (8.8.8.8, 8.8.4.4) that override your DNS server settings.
If you plan to use Chromecast, then it is simpler and probably does not have all the above methods.