After offer, Agent says needs to fill out Probate Addendum?!

[Jonn Vidal]

Submit a written cash offer and the selling agent (who would also be my buying agent unless insufficient) replied saying that the offer is too low, it will sell above asking, and I need to fill out the Probate Addendum.

Listing doesn't even mention any probate/trust sale.

In CA isn't it required to disclose that type of sale up front?

Plus agent did not send me the Probate Addendum to fill out. Like I can just get a Probate Addendum somewhere??