Almost surprised that you you are surprised.
Despite numerous posts of success I along with many have received exactly same reply , despite no change of information.
Just using magnifying glass to auto fill.
Seems that currently they are trying to sync TM30 with online reporting.
Incompetent at best.
Suggest report via mail option however this need to be done 15 days prior to due date..
My last two reports required in person to CW. .
For no reason
BTW: immigration will give zero explanation. Don't waste your time.