Investing money takes ages

Why does it take Plum ages to actually get an investment done in their stocks?
I mean we are talking over a week to actually get money invested which to me is terrible service.
Other apps invest in stocks snd etfs the same day so why does it take Plum so long?

Whilst I agree it’s not ideal, I’d you’re dollar cost averaging into funds it’s no big deal.

On the plus side, when they launch individual stocks :soon:, they will be settled instantly I believe.