2021/10/06 [Resolved with remaining impact] An issue preventing users from re-editing images edited and uploaded during a certain period of time occurred

2021-10-07 01:15:06 UTC 2022-01-06 01:51:17 UTC


If you have edited an image in the mobile app (iOS/Android) or Windows Desktop app and then uploaded the manual during a certain period, you could not re-edit text and other elements added by the image editing function.

Occurrence Time / Status

The issue has been resolved, and the service is back to normal.

However, we could not solve the problem with the images edited and uploaded during the applicable period described below.

Impact Range

Applicable period

・2021/09/01 19:00~2021/09/02 13:30 (JST)

・2021/10/05 14:00~2021/10/06 13:30 (JST)

The images in the manual that were edited and uploaded (saved as draft/published/updated) during the above period are affected by this issue.

Target App

・Mobile App (iOS)

・Mobile App (Android)

・Windows Desktop App

How do I verify if I am affected?

On the manual editing screen of the Web browser version, open the image editing screen of the cover or step, and check if there is an element such as text that cannot be moved behind.

Related: Teachme Biz Web Browser - Login page
Related: Create and edit manual (Web Browser)

What should I do if I am affected?

We have identified the cause of the problem and taken measures to prevent its reoccurrence. Unfortunately, we could not restore images that were affected by the issue and make them editable again.

If you have edited and uploaded an image during the applicable period, use one of the following methods to restore and make it editable.

If an original image (before editing) is still in your possession

Please replace the image and re-edit it again.

Related: Replace manual image or video (Web Browser)
Related: Manage image/video files(Windows Desktop Application

If you no longer have an original image (before editing)  in your possession

Check whether the backup function can restore the manual containing an original image (before editing).

Related: Restore manual from backup (Web Browser)

Please save the cover or step with the original image (before editing) from the restored manual to the clipboard. Then replace the image in your existing manual with the original image (before editing) and re-edit it as needed.

Related: Use clipboard function (Web Browser)
*Follow STEP 10 of the above manual to replace only step image without changing step title and description.


We sincerely apologize for the inconvenience.
If you have any questions or concerns regarding this issue, please contact us from here.