The Username and Password are case sensitive. If you have not used online or mobile banking in the last 6 months, you may need to re-enroll. Online Banking accounts expire after 6 months of no activity for your protection. To re-enroll, return to our website and choose Personal - Online Banking and Enroll Now. For assistance call your local branch office or 800-645-5739 M-F 8:00-5:00 MT.