I want to share my experience. I also encrypt your my wallet and then could not find the password. All passwords that I have tried to enter did not fit. But today I made it! And this password I have tried many times! When I encrypt the wallet, I did it through TeamViewer. And I suspect that this program was the reason that the wallet did not accept passwords. It has some sort of problem with language switching. Today I again login through TeamViewer - language was English. I switch the language, but it is still English. And I began to enter passwords and wallet accepted password! Perhaps my post will help someone. Excuse me for my english.