on the off chance:
some characters do not always work in some password software. Try resetting the password to something with a different kind of pattern to what you used last time, eg different punctuation marks or heavily leaning on upper/lower/number characters and only basic punctuation marks.

also, if you copied/pasted from a program with artificial stupidity, specifically but not limited to MS word, it can and will change the characters behind your back and then when you copy it, you have the wrong code, and you can't even visually see this.