“Incorrect response. Please refresh the page.” is the message I’m getting when logging in with FireFox. digging into the network data I see this is actually a problem with the hidden captcha, error code “errors.com.epicgames.accountportal.captcha_invalid”. You should probably give an alternative captcha method.
We’ll get someone to take a look, thank you!
We’re out on a limb with FF.
The people who wrote the web interface for Disney Plus should be thoroughly ashamed of themselves. Basically impossible to control with FF. I think they wrote it for Edge, and only ever tested it on a tablet 
Same here with FF ; captcha doesn’t display and response having errors.com.epicgames.accountportal.captcha_invalid
Ok with Chrome