It seems that you are unable to purchase tickets for the first floor. This could be due to various reasons such as:
- The event or activity on the first floor is already fully booked.
- The ticketing system has been closed, and it’s not possible to purchase any more tickets.
- There might be specific restrictions or requirements to access the first floor that you are unaware of.
If this issue persists, I would recommend contacting the venue directly or seeking assistance from a customer service representative for further guidance.