The VeriFLY app is difficult to use. We have sailed on Celebrity, Royal, Princess and Azamara since the end of the pandemic. The VeriFLY app was the most difficult to use. Hopefully, Holland will get this fixed. I wish they would get their instructions co-ordinated. Holland instructions told us that we would not need COVID vacination information. VeriFLY wanted us to download a portion of our COVID card data.