So the only reason they "allow" you to do so, I dare to assume, is because you click that small x button on the pop-up message and disregard the warning.
No, this is inaccurate. I didn't get any restricted pop up as my traffic was always routed through my Canada VPN (which of course let me access the platform with no warnings or issues).
It was only until the withdrawal that they suddenly took issue with VPN usage.
Let me see if I get this correctly, you never had any pop up message when you accessed from AU, or any other places that you happened to visit that is/are part of their restricted territory because you always use your Canada VPN, of which, naturally, will always place you in Canada?
I'll advise you to visit their ToS and read section 13, or just read below, I've snip them for you

.
Let me simplify this, even without that new admission of yet another breach of ToS, you accessing from AU is already a violation of their ToS you agreed with, and violation to ToS entailed by repercussion.