This isn't really relevant.
The key point is whether the specific 30% max bet rule was broken. The rest of their argument is "spirit of the bonus", and not acceptable for an accredited casino.
If the
OP is certain she didn't break the 30% rule, she should
PAB right away.
The bet of €15 on two numbers would be classed as a bet of €30, as it is the stake per spin of the wheel that matters, not the bet per number. If she increased the total bet per spin after getting lucky on this opening bet, then this is where the 30% rule could have been broken.
The rule applies to 30% of the bonus, or 30% of €143, which gives a max bet of €42.90
This would be broken if she added one number to her strategy, making it €15 on three numbers, a total of €45
By going into Playcheck, the Roulette bets can be checked to see if any transaction entry shows a total greater than €42.90, and if not,
PAB as the rest is a "spirit of the bonus" argument.
Not all casinos even allow play on Roulette for a bonus, and if the game shows as zero weighting in the terms, this effectively means it is not allowed, but in that case they should have said so in the email rather than waffling on about the max bet rule and small bets on slots.
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