This event has been rescheduled...
As you would already be aware, The Offspring and Sum 41 concert on Sunday 19 April 2020 at HBF Stadium was rescheduled and did not take place on this date.
Updated message from the promoter Destroy All Lines:

We hope everyone is staying safe and healthy during these unprecedented times. Here at DAL, we’re working away on lining up a suitable date range in early 2021 to hold The Offspring and Sum 41. As the ongoing COVID-19 pandemic evolves, all parties are seeking absolute certainty that any new date range agreed upon is realistic.
Please hold on to your tickets as ALL tickets will remain valid for rescheduled dates. 

The event organisers are working hard to arrange a new date and as soon as we get any update on this, we'll be in touch to let you know. Your tickets will be valid for this new date.

Please understand that given the extraordinary circumstances, our Fan Support teams are incredibly busy at the moment, so we encourage you not to contact us. Instead, you can find lots of information and answers to your questions in our information portal.