@Alfred ******
They are talking about the fact that when they came into the country on either a 30 day visa exempt entry OR a 60 day tourist visa entry they went right onto amnesty from that entry stamp and did not use their "regular" 30 day extension that you can get for 1900baht at the immigration office off either of those entries. AND they're wondering If they can use them after this new amnesty starts and get it dated from the 27th of Sept.
AND
the answer to that
@Łunaty******
will be WAIT until the new amnesty actually starts (which will be Saturday so wait until Monday) and then GO to your immigration office and ask them if you can get the 30 day regular extension