Where to Find Your API Key and API Secret
Log in to your ConvertKit (Kit) account.
Go to Settings (gear icon).
Click Advanced.
You will see your API Key and API Secret. Copy both.
Paste them into the ConvertKit card in the plugin and click Connect.
Form IDs vs Tag IDs
ConvertKit can subscribe people to Forms or Tags. The plugin uses Form IDs by default.
To find your Form ID:
In ConvertKit, go to Landing Pages & Forms.
Click on a form.
Look at the URL — the number at the end is the Form ID.
Tip: If you prefer to use Tag IDs instead, enter the tag ID in the list field and make sure the subscriber will be tagged correctly in ConvertKit's automation rules.