Verified answer

Contact their customer service. They should be able to reset the devices and then allow you to re-authorize the one you're using. You might also want to change the password.

Possible Fix:

1) On the upper left of the screen click the arrow that says "back to browse," then try playing the movie/show again. (This probably won't fix it though.)

2) If that doesn't work, while you are on the "oops, there is a problem" page, hit your backspace button to go back one page in the browser, wait for a moment, the media may start playing, if it does not, then go back to the home page of Netflix and try playing the media again. Try this a second time if it still gives you the "oops" message.

3) What Rose D said...

...you could also just read a book.

Likely because you are logged on to Netflix on more than one device. Trace back to make sure you are logged on on no more than one device (e.g. phone, pc, computer, playstation, wii, etc) and then make sure from then that it's just one. You should be fine. If not, change your account login or reach out to customer service.

The Walking Dead Prison Break