Hopper complaint: Confirmed Reservation not found at the Resort upon Check-In

I booked a trip in Oct 2022 for a week’s stay at a resort in Cabo San Lucas, MX, in Feb 2023. I had conversations with customer service a day or two after I booked because my credit card had been declined. It turns out my credit card company had cancelled that particular card because of suspected fraudulent charges and reissued another to me with a different number. I rebooked the same resort for the same dates under the correct number. Then, the app showed I had two reservations for the same time period. I chatted with a Hopper agent, Joven, who assured me that my reservation was ed and that I only had one reservation under one ation number. I felt confident that my reservation was secure and the Hopper app continued to show that my reservation was ed, along with an email ation I received from them. Low and behold, the day of reckoning came when I went to check-in to the resort on 2423 (Hopper app still showed reservation as ed). After 30 minutes of searching and consulting with another staff member, the resort staff informed me that I had no such ation of reservation. After contacting Hopper (again chatting through the app because you cannot contact them in person) I was told that my credit card declined and that was why my reservation was cancelled. I argued that I had copies of chat with an agent named ‘Joven’ who had assured me everything was in order. After three different times chatting with three different agents, I got nowhere. They just kept telling me that my credit card had declined, no matter how many times I explained that that was the first reservation attempt and that my second reservation was secured. Long story short, I had to book with the resort directly and ended up paying twice the amount I was quoted through Hopper. I will NEVER use this app again and I’m posting this as a warning for anyone else considering booking on Hopper.