The LTI grade push times out after 300 minutes of failed attempts. My suggestions are:
- Periodically try the push again for several days after a failed push attempt, since 300 minutes is not always long enough to account for server communication issues.
- Indicate in grade centre that a push attempt has failed. Sending an email to a single instructor is not reliable if several people are teaching a course. The email may get lost or sent to junk.
- Include a way to manually trigger a grade push, since once you know about the problem you have to be able to solve it.