I’m using The Newsletter Plugin with Newsletter API Extension, but I’m unable to perform some calls.
curl -X POST \
-H 'cache-control: no-cache' \
-H 'content-type: application/json' \
Performing a call like this, the subscriber is created but not added to the list #2.
The API Key is correctly added in the admin section, I double checked.
Am I doing something wrong? Any suggestion?
Thanks for your support.