Yes. You can get a refund on your subscription during the first 30 days if you aren’t satisfied with your VPN experience.
For a fast connection, UltraVPN reviews suggest choosing a server nearest to your location, unless you’re trying to access a content exclusive only to a particular country.
You can try switching the connection on and off a few times to help the app look for the fastest server nearest to your location. It’s perfectly normal to experience speed reduction sometimes when using a VPN because data travels to the servers before reaching their destination.