Hi,
It seem that Preev is down for the moment, or their server on Heroku is not yet paid, or transferred their app to Heroku.
Any infos ?
Hi a good alternative is my converter I created this for the community it's a two-year-old converter I've been using for the last two years
https://thecryptocoinconverter.com/ please bookmark so you can use anytime to convert your coins to your local fiat.