I do not see any warnings about needing a VPN.
Most likely that browser version is not supported by this subreddit and it is not related to the desktop app. So it’s unofficial. So use at your own risk.
This website was already discussed on here several weeks ago.
https://www.reddit.com/r/PopCornTimeApp/s/UDdGEDG66K
It’s a fake website that has nothing to do with the App.
The VPN isn’t for the use of popcorn time itself. Its for watching the content.
The movies and tv shows on popcorntime are just torrents grabbed around the web. You will always want a VPN for that.
Na not really can i ask what poocorntime site you trying to download?
What really? 
Link please?
Yes. As you may know already, Popcorn is piracy base of torrenting. No matter how you access popcorn time, it’d advisable to use VPN to filter all of your data, including location, by your ISP. It’s good practice to use this also as most has built-in ad block and other security features that can help your streaming smooth and secure.
Oh is the browser version not official?