Trial and error has taught me to rely on computers for many purchases. I wouldn’t necessarily say “big” per se, but anything that requires you to do extra validation or fill out forms is just a pain to do from the phone. Glitchy things often happen because too many companies have badly coded mobile experiences.
The worst is when I try to do things on mobile where I follow a link from an email, then partway through get a “We need to verify your email address, please enter the code we just sent,” which I can’t get to without closing the webview that is currently being served up by my mail app and starting over.
In my mail app, there is an option to open in the browser. Solved this issue for me!
Unless you set a different default browser. From my experience, Gmail will still use the chrome web view so when you open it in your default browser it still resets.