I have been thinking about the record date differences and maybe the white card is looking to control all shares you have at the broker on the company record date - that would account for buys and sells between 13 d record date which I think was 8/12 and the company date.
This strange misaligned timing would only miss if you bought shares at a new broker in the gap between the two dates.
Don’t know if this is right but was the only readin I could think of.
IMO