I just emailed Kat with my transaction details. She eventually responded to say she received my email and apologise for the late reply.
Today I got the following:Dear Big Un Shareholder,
Piper Alderman is still taking registrations for the class action arising out of the collapse of Big Un (ASX: BIG).
We apologise for any delays in responding to your emails. We will respond to you as soon as we can.
Regards,
Kat