ticketbuyers for the 2020 Jera On Air edition in the Tickoweb ticket shop recieved an e-mail about their options:
1) keep your ticket for 2021 (you don't have to do anything)
2) get a voucher
4) get a refund
If you choose the options 2, 3 or 4 you have to react on the recieved e-mail before the 1st of september 2020.
Presale for Jera On Air 2021 starts soon.