Thanks for your email to the Cloudflare Partner Team. Please review the articles below to see if they answer your questions.
Prioritized partner technical support: please contact firstname.lastname@example.org with a detailed description of the issue, supported with screenshots, error messages and log files if applicable.
The Client API gives you the ability to manage Cloudflare settings for individual accounts (e.g. update DNS records, select security levels, choose performance features, determine the caching level, create page rules etc.) for domains that were added via the Partner API.
The Reseller API allows you to create paid subscriptions for domains that are associated with a given partner account.
The Client API allows you also to add domains on Cloudflare but these will not be associated with your partner account. As a partner, if you added your customer's domain to Cloudflare via the Host API or one of the associated plugins (e.g. the Cloudflare plugins cPanel or Plesk), you are able to manage their domain settings using the Client API. The Host API will return the user_key and user_api_key when employing the 'user create' call.
ServerShield installation guide (for Plesk server owners)
(N.B. it is not possible to add customer domains to Cloudflare via the Partner Portal, this can only be done via one of our plugins or the API).
If you have reviewed all these options and your question is still not answered, please email us again at email@example.com
Cloudflare Partners Team