Hi floyd73,
Please see this article that I wrote which explains the difference between true SP bets (only ever matched a the SP price) versus exchange bets which can 'take SP' if not already matched:
SP BenefitsAs explained more fully in the article, if you want pure SP bets (i.e. ones that are only matched at the SP price) then you need to use the website to issue those bets. Cymatic does not offer pure SP bets, it only offers exchange bets (which can be matched pre-play or at the SP). Then you could trade the second part of your strategy using the software (to trade out of your positions in-play).
Kind regards,
Gavin