🧑🏽‍💻 The Carrier On-Boarding Support Tool
(COBST) – webportal

https://support.travel-europe.europa.eu/

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📞 Emergency phone line
+48 22 152 57 50

if the COBST is not accessible
ONLY in case of urgent requests (such as technical impossibilities)

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Frontex FAQs in all languages

https://wiki.travel-europe.europa.eu/