This is still happening for me. I had 100% of my clients on one day not receive any of their invoices, which I didn't discover until chasing late payments after Christmas. It happened again last week for me so this issue is definitely not resolved. It seems inconsistent with the same clients - sometimes they get it and sometimes they don't. 

Seeing all of these unresolved issues, I will definitely be looking to a new provider now as there are other limitations to this software so no longer worth the money.