Before the first spin, the outcome stays open
Deciding whether to keep spinning for the bonus round is a choice you make without knowing when it will come. How often the bonus round appears is not known in advance, and nothing in the rules tells you the next spin will trigger it. The result of one session is random whatever the RTP, so a 96.50% figure describes the long run, not your evening at the reels.
Choosing which version to trust starts with the rules screen, because the RTP version 22aud Casino runs is shown only in the game rules. The series name and the game title do not tell you which version is live. Open the rules before your first spin and read the figure there.
Deciding how much to stake for a big payout means looking at the ceiling first. The maximum win is 8,000 times the bet, and that ceiling is reached very rarely. Treat the figure as the top of the paytable, not as a target for any one session.