See Case #89893
The student account of a user was made inactive. The user became an adjunct and received a new Echo account with the adjunct email address. More time passed. The same user became a faculty member with a new third Echo account. Two old email address Echo accounts were inactive, but something caused the active user account to match the old account incorrectly. This caused a failure in the LTI and the user could not access Echo Active Learning content when taking professional development as a student. Nor could the user successfully add an Active Learning LTI to his courses where he teaches.
This is hard to debug. Why not Reset LMS account automatically each time the Echo user account status is changed?