Sometimes, you couldn't connect to the VPN Proxy Master server or couldn't open the website after connected to the VPN server.
This might due to your Internet connection speed. You could test your Internet connection bandwidth via https://www.broadbandspeedchecker.co.uk/
How it works?
Start the Internet Speed Test by clicking the red button "Start speed test" under the dials.
The Broadband Speed Test will start measuring your Broadband's download speed and then your upload speed. You will also see your Ping time in milliseconds – the smaller the better.