This change is suspicious, even more during the full year audit....

This change is suspicious, even more during the full year audit. HLB would have started their review by now, probably a few weeks ago to be more precise.

HLB is one of the most reputable firms among the mid tier accounting firms in Australia and internationally.  I also know firsthand thay they are extremely competivive in terms of pricing. 

I find it difficult to believe lower costs was the reason for changing auditors. One could argue they wanted to have a more credible firm, but then they would need to go with one of the big 4. This shift to PKF doesn't tick any of these boxes.

If I had to pick a reason it would be about MYQ solvency and going concern status.