LearnPress Paypal button adds text

Hi,
I’m new to LearPress.
I have started to build my first course and encountered a strange message displayed above the paypal button.

It says:
(Please enter your PayPal Account or Merchant ID on the settings pages.)
However, I have set my paypal correctly in the settings.

I tried to watch some tutorials, including the official ones, however they all showed a payment tab richer than what I have (LearnPress is upadated).

I would appreciate any direction.
Thank you!

The page I need help with: [log in to see the link]