Anyone who has attempted to play Final Fantasy XIV beyond the free trial has experienced this. Their subscription management web app is so incredibly bad it takes a significant amount of time and effort just to purchase a subscription. I wonder how much revenue they lose simply from people giving up.
I was wondering why the process was so convoluted. I thought it was because I was doing it from my phone and they just had a poor mobile site. Well, apparently they have a poor desktop site that has poor mobile support!
I was bored and tried playing FF14 about a year ago. You need to do the usual download a launcher to download the game, fine. It asks you to log in before it'll download, fine. It crashes ~10% of the way through downloading the game. Not great but you can make it by restarting the launcher and trying again. And again and again, about a dozen times. It does eventually finish though, and I did almost successfully make a character. Except after making my character you have to choose a server instance - and every single instance in the NA server I could find was "full". I don't know if it was actually full or erroring but I gave up at that point.
The buttonology is cryptic. Like you asked tasked enterprise java devs to write frontend in jquery.
At least that's how I remember it. Game might be fun, but I'll never know.