"Authentication Error: Re-login required." is an error Message displayed when a session is disconnected.
A session is disconnected due to the following reasons.
- The session Expiration Date has passed
- The maximum number of connections per account has been exceeded
- The Device Used was deleted
To resolve this, please log in again.
For details on the session Expiration Date, the maximum number of connections per account, and deleting a Device Used, please refer to the following.
▼Tell me about Session Management
https://help.teachme.jp/hc/en-us/articles/900006443883
▼Maximum number of connections per account
Maximum number of connections per account
▼Temporarily Suspending or Deleting Access from Any Device (Web Browser)
https://teachme.jp/8/manuals/41165858