Mention limit breach means that you reached your monthly mention limit. Because of that, you won't be able to generate any more mentions until next month.
When you use all of your mentions, we will stop displaying them in your feed and new ones will not be collected until you optimize your query.
To make sure you don't miss any mentions, you can:
Apply additional filters to some of your queries
Optimize current query set up
Ask for help from our Customer Support team through the chat in the tool.
You can also upgrade to a larger plan or wait until the end of the month for a reset of the counter. Keep in mind that we will not collect any mentions from the moment of Mention Limit Breach until the restart of the counter on the first day of next month.