I have the same problem when I updated to the last version of WordPress 4.6.
Following your suggestions I have contacted my hosting to know whether PHP CURL module is installed and updated. However they have told me that this option is not provided for shared hostings due to security issues. In any case everythin was working fine till the wordpress version 4.6
I also have the problem of Ads in woocommerce productos, and the quicktag <!–NoAds–> it does not work. Thanks a lot for this wonderful plugin
