Great work!
We run WP on Windows w/ IIS. Needed to add a .pem file and update php.ini to get this working. Was frustrating to figure out the issue… but once we did, this plugin is great.
Here’s how to set up Windows + PHP with cacert.pem
https://snippets.webaware.com.au/howto/stop-turning-off-curlopt_ssl_verifypeer-and-fix-your-php-config/