I just placed an order with payment via PayPal. It went through correctly and there were no problems with the order on that basis.
However, I discovered by accident that my computer was still logged in to PayPal after leaving the DAZ site. This is a change in behaviour - the old system logged you out - so if you’re using a public computer, remember to explicitly log off from PayPal before leaving or you could be in for a nasty surprise.
Hopefully this can be sorted out quickly!