User is not given 20 secs to extend timeout
timeout-extension-grace
Rule
If there is a session time limit, users MUST be warned before the session ends and MUST be given time to save their data and/or extend the session.
Background
People with disabilities such as blindness, low vision, mobility impairments, and cognitive limitations may require more time to read content or to perform functions such as filling out online forms. If a session has a time limit, it may be difficult or impossible for some users to perform the required action before a time limit occurs. People must have the ability to turn off or extend time limits while interacting with content. Giving people the ability to turn off or extend the time helps ensure that they can complete tasks.
How to Fix
Fix this issue by giving the user at least 20 seconds to extend the time limit with a simple action (for example, "press the spacebar"), and allow the user to extend the time limit at least ten times.