Wasnt able to board flight from Pensacola to Miami due to not have a negative covid result in hand. Took the test required in the allotted time required but test results were not released before check in time. Was never made aware we couldnt board the flight without that paperwork by the airline beforehand. When we there there trying to check in, Katherine was super rude and unhelpful. From the minute we said where we were going, she got defensive and unwilling to listen to anything we said, let alone help us. We had the required QR code and number sequence code for the Belize government to track us and anticipate our arrival, yet she kept saying we didnt. She also said we didnt do a covid test, which we did, just hadn't received a result either way. She told us to contact customer service but they would tell us the same thing so we would be wasting our time. Katherine also made it apparent that there was absolutely no supervisor for us to talk to and seemed happy to push it along out of her line. Do not recommend this airline to anyone. Their customer service and overall attitude and willingness to help the paying customer is unbelievably underwhelming.