i have a setup on a droplet that have ubuntu 16 + nginx + php7
i installed Wordpress and everything was fine, until i installed plugin that connects to some API's..

the plugin gives me error saying (wpremoteget() failed. Webservices won't work with your server. Contact your hosting provider. Error: Could not resolve host: xxx.xxx.xxxx
)

so how could i enable wpremoteget(), i searched a lot till i knew its something related to CURL, which i have installed before and fully functional, any ideas ??