True Story

So there I am, making another sound, well thought out purchase on eBay, when I'm prompted to sign into my PayPal account.
 'No worries,' I say, 'let me just type in my password.' I type in my password.

 --Sorry but that password or username is incorrect--

 'Hmm, that's funny,' I say, without so much as a chuckle, 'better check my username.' It was correct. I tried it again.

 --Sorry but that password is incorrect, please note that passwords are case-sensitive--

 Case sensitive!? That must be it! I'm using my tablet, it's notorious for switching me back to lower case at the most inconvenient times. I try it again, paying extra close attention to the shift key.

 --Sorry but that password is incorrect, please log on to PayPal with your computer so we may assist you-- 

'Wait, you're saying it has something to do with my mobile device?' I'm beginning to think it may have something to do with my mobile device. I jump on the computer.

 --Sorry but that password or username is incorrect--

 So now I'm thinking it has nothing to do with my email address, case sensitivity or my tablet;
'I've forgotten my password!' Time to reset it. Check my email for the link. Time to choose a new password.
'Maybe I should use that password I've been trying to log in with - apparently I can remember that!'

 --Sorry, your new password must be different to the password currently in use for this account--

What? 'WHAT!? But, but I... PAYPAL!!!'

 --U Mad, Bro?--