Happy New Year! We’re happy to announce this new release of FrostWire. FrostWire 6.4.3. for Windows, Mac and Linux fixed YouTube and ExtraTorrent searches. Also, includes the new jlibtorrent which provides more stability and better performance.
Changelog
frostwire (6.4.3) stable; urgency=high
* Fixes issue with YouTube search
* Fixes issue with ExtraTorrent search
* Fixes issue where trackers would not be saved correctly when creating a torrent
* New jlibtorrent 1.2.0.5— FrostWire Team <contact@frostwire.com> Thu, 12 Jan 2017 18:52:00 -0600
What is FrostWire?
FrostWire, a BitTorrent Client & YouTube Downloader that makes it easier to search, download, play and share content from the BitTorrent network & cloud sources, all in one place, announced today its new ‘preview’ and ‘play as you download’ capabilities for Android phones and tablets. The new preview feature not just enables users with a more convenient way to find and discover content, it makes downloading optional in some cases.
Get a VPN
If you want to protect your privacy while you’re browsing on the Internet, or using FrostWire, or any App, we strongly recommend you to get a VPN. VPN stands for a Virtual Private Network. It’s a service that provides you a secure encrypted connection to other computers on the internet, some VPN services also provide anonymity when connecting to servers and other computers online. If you do not connect to the internet via VPN, all information coming out of your computer, including your IP address, is open to whoever wants to access them.
Official FrostWire Blog 
Why won’t FrostWire allow me to download anything without a VPN. The bottom left bottom corner just shows a shield with a red dot
Hi! Check your Settings. Probably you activated the VPN Guard option.