I was having issues setting up a password on google. In the end, it was mix mash of swear words, when I got the last message, "Abusive Language not Accepted". My password is so jumbled now that , it is written down, and I make mistakes at least a half a doz. times when I use it. I though nobody would read a password, but it could have been the computer system, at the other end, that was offended.
It's not just seniors who have a problem - it is hell for everyone. And then when Facebook refuses to recognise it and you have to create a new one - usually with the f word in it.