Last week, when making a reservation, the agent said the website is troublesome, the App is more reliable.
I had been on the website trying to make a reservation for the summer, and the button to proceed after entering all the information including payment would stay gray (inoperative) and would not turn green, no way, no how. I checked every box and entered all information I was supposed to. I gave up and called to have them do it.
The agent came up with a fare that was 58 cents more than what I was quoted when I tried. I let that go. (It was a Senior + 15% NY State discount - mathematically comes the same regardless of which discount you apply first)