Originally Posted by Goldorak

You were clearly at fault here, as others have said. But you will have learned a lot from this mistake. Travellling has become a total nightmare of bureaucracy that politicians are trying to justify by safety. The only thing you can be upset with with TAP is to not have a policy allowing to rebook fro free in that kind of circumstances and vote with your feet by never flying with them again. Some airline have a policy for this situation of not having the test on-time.
Question : did TAP inform you at any time of this requirement ? Because with AFKL, for instance, they send you several sms and emails with the requirement of the destination country and for transit in their hubs.

Originally Posted by chgoeditor

To be denied entry to two countries in the span of 13 months doesn't seem to be a case of learning from mistakes. Maybe the third time's a charm.