Hello @sreford
With the information provided, I am not completely sure what the situation is you are encountering. You might not have your account successfully onboarded, so you might need to try again. If that keeps failing, you can also try this with all other plugins deactivated, to avoid this is failing because of a plugin conflict.
However, first you might want to verify that if your account has been onboarded by checking the connection tab and seeing if the 4 account fields (Email address, Merchant Id, Client Id and Secret Key) have been populated.
There is not much to go on at this moment, so please provide more details for me to help you. If you don’t feel comfortable sharing those details on a public forum, please open a ticket with our service desk. You can find the instruction for this here: https://paypal.inpsyde.com/docs/request-support/
(please add the URL of this thread in the ticket as well)
Kind regards,
Joost