Update add-provider.md (#114)

Author: Echolon

content/add-provider.md

@@ -20,8 +20,10 @@ The [provider file generator](/provider-file-generator/) helps you with that.
 
 5. To be listed in a specific [category](/faq/#in-which-categories-can-providers-be) such as A or B, your service needs to fulfill certain [criteria](https://invent.kde.org/melvo/xmpp-providers#criteria).
 Therefore, you may need to add information to your provider file or change your server configuration.
+All criteria can only be met if a test account at the provider to be added can be used by the [XMPP Compliance Tester](https://compliance.conversations.im).
+If no test account is set yet, you need to [provide its credentials](https://compliance.conversations.im/add/).
 
-6. Only if you have done the previous steps, [create an issue](https://invent.kde.org/melvo/xmpp-providers/-/blob/master/CONTRIBUTING.md#providers) to be added.
+7. ONLY if you have done the previous steps, [register a KDE Identity account](https://identity.kde.org/index.php?r=registration/index) for contributing to [KDE's GitLab instance](https://invent.kde.org) used by XMPP Providers, [log into the GitLab instance](https://invent.kde.org/users/sign_in) with the credentials of your KDE Identity account and finally [create an issue](https://invent.kde.org/melvo/xmpp-providers/-/blob/master/CONTRIBUTING.md#providers) to propose your provider to be added to the project.
 
 If you are interested in the project's goals and the need for such criteria, you can read the [about page](/about/) and a related [blog post](/blog/2025-07-20-rising-tide-lifts-all-boats/#perspective).