A ceiling, never a promise: the maximum win
97.17% is a long-run figure, and it does not say when the Free Spins will arrive. The bonus round can land on the first spin or not at all in a given session. Each spin is random, so the result of one session stays random whatever the RTP, and nobody can know in advance how a sitting will end.
97.17% is the only RTP listed for Gemhalla, and the game rules are where the version in play is shown. Check them before the first spin, so you know which version you are playing, and read them again if a figure looks different elsewhere.
x5,000 the bet is the maximum win of Gemhalla, and it is a ceiling reached very rarely rather than a target. The figure sets the upper limit of the payout, so it says nothing about what a session will return. At the A$2 example top bet, that ceiling is A$10,000.