I have received feedback that a number of donation attempts have been made and failed. Having checked with the Gogetfunding team, I have the update below.
A number of donations attempts to this campaign have failed because the donors do not have 3DS enabled on their card. This is an extra layer of security for online payments. When this happens the donor would either need to donate with a 3DS enabled card or use the bank transfer option presented to them when they are donating.