Hi there, @Robin1927.
How's your day going so far? I hope all is well.
For now, the customer message will appear at the bottom of all pages. I understand that only having the message on the last page would be better equipped. With that said, I wanted to let you know that I've personally submitted a feedback request to our Product Development Team. This way, the suggestion can be considered in a future update.
Any time you'd like to submit a request, you can do so by using the link I've included below:
Please let me know if you have any questions or concerns. I'm always around to lend a hand. Take care!