same problem here. it ha always worked then all of the sudden stopped.. the login details are correct. i re-entered them just in case and i logged in to the other website... opensubtitles.org ...maybe is their problem...

Hello Everyone, I installed opensubtitle in kodi, it has always worked, i have entered user name and password then all of the sudden it stopped working .. a pop a window telling me the user name and psw are incorrect or empty... they are not lol.. i tried to unistall and re-install re enter the log ...