Api Error message

Hi,

I am experiencing an error message when setting up a simple payment collection. I am using the donation option as the form is to collect the balance after a deposit has been paid for a tour earlier in the year. The balance can vary so user needs to enter the amount due.

All looks good so far but when I embed the shortrcode and test the form by clicking the button the overlay appears with the following message:

IntegrationError: Invalid value for Stripe(): apiKey should be a string. You specified: false.

I am using the same keys that are used in the Stripe payment gateway integration for WooCommerce and I have tested these with a test woo product.

My test is on a subdomain for testing. Would this be the issue?

And do the live keys also need to be added if I am only testing?