This summary is not the rule. The rule text controls.
If you want to file a complaint about a judge's conduct, you should do it as soon as you reasonably can after the problem happens. Waiting too long could hurt your complaint, but there's no strict deadline written into this rule.
Instead, the people who look into the complaint will decide whether you filed it in a reasonable amount of time. They'll look at the details of your specific situation, like why you may have waited and what happened during that time, before deciding if the timing is a problem.
This means there's some flexibility here. If you have a good reason for a delay, such as not knowing about the misconduct right away or needing time to gather information, that context matters. Still, it's always best to file your complaint as quickly as possible after you become aware of the issue.