I just dropped down to the plat myself. They keep devaluing it. They dropped AFR for Australian as well which was a disappointment. Now even the titanium cards are being replaced with cheap metal ones. Yet they increase the fee. I know another person dropped to plat through the pandemic and then just applied to go back to cent recently. It's not guaranteed but possible.
Edit: you get 30 days to refund full fee from renewal date or it is pro rata charged (ie you pay a year in advance)
Edit: you get 30 days to refund full fee from renewal date or it is pro rata charged (ie you pay a year in advance)