betternet is probably just slow atm. I recommend paying for a vpn so your info isn't being sold and you wont be a part of a botnet. And of course get faster connections. I use purevpn but you can also try tunnelbear. If you don't care and you're gonna use a free vpn I recommend getting multiple free vpns for this reason. Other free vpns are cyberghost, hotspotshield, tunnelbear and vypr (500mb a month). Hope I helped! :D