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Letters module - Image-related error messages

A Microsoft Word update Version 2607 (Build 20228.20190), was rolled out on August 11th, 2026. This update causes an issue inside the Letters module, where images do not show after saving a letter (but not sending). An error message may appear to the... Read More

"User or device not authorized to use the service" error

Overview If you have received this error when attempting to use TDO Mobile, it is likely that you are trying to access from a new device. When you change devices, a new PIN will need to be associated with the account inputted in the Setup area. This... Read More

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