Holding Deposit - Confirmation Message or Not?

I have put down an holding deposit for a flat we saw today.
We are aware that the landlord has 4 days to decide and then we will be moving in some directions.
I just would like to know if there should have been any confirmation message from OpenRent or the landlord itself that I should have received ?
Thanks a lot

Hi Emanuele, yes you will have received a confirmation email upon placing the holding deposit.

Have you still not received one?