At this point, what you should do is serve a new N5 as a first N5 with a 20 day termination date. If the problems are not corrected within 7 days, you would not serve a 2nd N5, you would just simply proceed with the next step which is to file the L2 application with the Board. The only time you serve a 2nd N5 with a fourteen day notice period is when the first N5 was corrected within the seven days and then the problems started again.