I share your pain with this, we have been having the same problem.
It's not clear whether the issue is with QB or with Coop since it's seemingly impossible to get to talk to anyone at Coop who knows anything about it. At least QB has acknowledged the problem and is working on it.
I recommend moving your bank account to Starling! After several years of Coop stress (repeated locking of our account, massive wait times to get to talk to anyone) I've made the switch and it is so much easier.
