Hello Rob.

Thank you for your purchase.

You should be able to enter the connection details under "Separate DB Connection" tab:

When you say you have nowhere to enter your credentials, what do you mean? Can you share some screenshots with us?

Best regards.

I see Rob.

We don't have those settings built-in the plugin.

You'd need to place the certificate in a path. You can take a look on this link  few solutions how to set that. Also you can find more information on this link.

Like it is said in the link  HTTPS requires exchanging and verify the SSL cert which protects the URL so if you hit an HTTPS URL you will receive an error because you aren't handling the security translation.

In file wp-content/plugins/wpdatatables/source/class.wdttools.php around line 170 you will find this line of codes:

curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
curl_setopt($ch, CURLOPT_USERAGENT, $agent);
curl_setopt($ch, CURLOPT_REFERER, site_url());

Probably you will need to add the certification there and everything should work fine.

Please let me know if this helps.

Best regards.