Thank you for sharing your opinion with us, it is very valuable to us.
We are sorry that your experience with Tootbus did not meet your expectations; please allow us to express our sincerest apologies.
We sincerely regret to read that you had issue in order to download your tickets. As you purchased your tickets on Viator, the number provided is, in fact, linked with Viator and a different one is necessary to import your tickets on our app. Regarding the issue on Viator app, we kindly invite you to contact them directly in order to share with you this experience.
We hope to see you soon on board one of our buses to regain your trust!
Tootbus Paris team