You need to re-enter the credential password under schedule. You may do this by trying the following:
1- Click the "Edit" icon (looks like a pencil) next to the schedule name on the upper right side.
2- Click on the 3 little dots next to the "Account" field. Also, update the "Start Date" to make sure the date specified is not in the past. Otherwise, your schedule won't run.
3- Click the "Edit" button.
4- Click "Edit Password" and re-enter password information and click Ok.
5- If you get a "Change successfully made" message under Status it means the password was updated correctly. You may proceed to close all windows.
The schedule should run successfully.