Hello Nadji,

Thanks for reaching out to us.

Please provide me a temporary WP-admin (administrator) user for your site where this happens, so we could log in and take a look ‘from the inside’ as that’s the most efficient way to see and resolve the issue. 

We do not interfere with any data or anything else except for the plugin (in case that’s a production version of the site), and of course, we do not provide login data to third parties. 

You can write credentials here just check PRIVATE Reply so nobody can see them except us.

Hello Nadji,

Thanks for the credentials. I've tried my stripe test credentials and the booking is successful, as you can see on the screenshot 

This indicates that the credentials are not correct. You want to double-check and possibly create new ones.

Of course, let me know if it works.