Hello Renoi , Welcome to Forum.
There may be some kind of delay between your account registering your payment.
Go back into the shop and your recent purchases. scroll down to the bottom and you should see the subscription you have paid. Your account should also have registered the A$ allocated to your account from the subscription payment.
If this is all showing, try logging into the game again and your wardrobe should also show your A$ amount that you have.
If it does, problem solved.
If it doesn't. Send a query to Support, found on the top bar with Shop & Forum. They will check your account and hopefully solve your problem.
Please let us know how you get on. good Luck.