If you select "Pay later" option you will only be able to pay by bank transfer. In that case, please indicate your PO number which is your EAA ID, and full name at the bank transfer.
EAA bank details:
IBAN: CZ28 2700 0000 0021 1392 7178
Accountholder: Evropská asociace archeologů (European Association of Archaeologists)
Bank: UniCredit Bank Czech Republic and Slovakia, a.s., Želetavská 1525/1, 140 92 Praha 4, Czech Republic
For assistance, please email EAA Secretariat at firstname.lastname@example.org