Unfortunately, some tickets were cancelled and refunded by mistake on the event's organizers side.
Check out their official press release here.
In conclusion, new tickets will be offered to the users who were affected by this. This new tickets will be exempt from new service fees, as they have not been refunded during the process.
To request a link to buy a new ticket, you can contact the event's producers directly on the following channels:
→ contato@movimentovambora.org.br
→ @festivalvamboramt