If the password box shakes, the entered password is wrong.
You may experience the following issue https://github.com/cryptomator/cryptomator/issues/938, where accented letters in the password led to a “wrong” password.
Please ensure, that you really enter the correct password (e.g. by clicking at the eye icon at the right border in the password enter area). Does anybody else has access to the vault? (e.g. the encrypted files) If the original password fails, it can also mean that the masterkey.cryptomator file was replaced.