Preev is still down so the exchange rate was taken from CoinMarketCap.
Maybe you can try using alternative made by member examplens.It's the same name but with different domain .net:
to all preev lovers, and for those who are used to it and find it difficult to change their habits https://preev.net/ is online 
so it's not a .com domain, it's a .net
there is also a different script (thanks to ETFbitcoin for the suggestion) which uses CoinGecko API for conversion
so it's not a .com domain, it's a .net
there is also a different script (thanks to ETFbitcoin for the suggestion) which uses CoinGecko API for conversion