Thanks for your message. Kindly note, this platform is not an official support channel. You must get in touch using the contact form for any support querries. In the contact form message you can also mention the ticket ID’s concerned.
Here we can simply help to narrow down the problem.
I doubt this is a general webshop bug, as every day, thousands of tickets are sold via the website and I have never ever heard about such a technical problem. If so, it would have caused hundreds of support cases in no time. Or, it must be an isolated issue with computers using the American language & date settings.
Could you check your computer and please let us know what browser & version you use. Can you reproduce it with another browser? Have you installed browser add-ons that could cause the problem? Are you using the US date format at your place, is there an auto-correction active?
I tried to reproduce the problem on multiple devices, it worked correctly no matter the device & browser type. I, however, use the website from Switzerland devices using the European format.