All services should be requested at the online registration form.

Confirmation of registration will be sent upon payment confirmation. Until payment is confirmed, the registration will be on hold and won’t be considered. The secretariat will send a confirmation mentioning all the requested services by email, this document will be a valid hotel and registration voucher.

All changes or cancellations must be addressed in writing to the secretariat Skyros Congressos by e-mail:

• Before July 13th 2026: full refund, deducted of an handling fee of €50.
• From July 13th till August 10th 2026: 50% refund.
• After August 11th 2026: no refund will be granted

All reimbursements will take place only after the meeting.

Registration changes will be accepted until September 4th, 2026 after and On Site will be charged 50€ per change.

Any change or cancellation must be informed to Skyros Congressos by email.

During the registration process, if the invoice is to be issued on behalf of another entity, it must be indicated before you finish and pay your registration. Otherwise the invoice will be issued on behalf of the participant.

The on-site Secretariat will only issue receipts for services requested on site.

Receipt changes will only be allowed if requested during the period of 30 days after the issue of the first document and only before or after the Congress never onsite.

Receipts related to payments of workshop and field trip registrations will only be sent after confirmation that the activity has taken place.

All certificates are digital and will be sent by e-mail, until 30 days after the conference ending. After this term Skyros-Congressos is not responsible for sending certificates.

For security reasons, the Secretariat will not accept payments in cash or personal checks.