When we are expecting a large amount of traffic to the website, the interactive seat map will not be displayed during presales or when the general on sale starts, in order to make the purchase process as smooth as possible for all fans. After most of the website traffic has subsided, the seat map will become available.
You can familiarize yourself with the seat maps in advance, e.g. from the venue website and check your chosen seats in the shopping cart before confirming the purchase.