Many users report problems with bookings not being honored or confirmed, leading to significant inconvenience and loss of trust. Approximately 10% of users seem to experience these issues, often having to rebook through other platforms. "I booked a hotel through Hopper, but when I arrived, they had no record of my reservation."

A notable number of users express frustration with Hopper's customer service, citing long wait times and unhelpful responses. This affects around 8% of users, who often feel abandoned when issues arise. "I spent hours trying to get help from customer service, but they were completely useless."

Users frequently encounter discrepancies between advertised prices and final charges, with unexpected fees added at checkout. This issue affects about 7% of users, leading to feelings of being misled. "The app showed one price, but I was charged much more at checkout."

Several users report that the app frequently crashes or has bugs, particularly during critical booking moments, affecting approximately 5% of users. "Every time I try to book, the app crashes and I can't complete my reservation."