I'm not sure that I understood best where your loss is here. Why is playing history so important here?
Amount Scammed: potentially thousands.
what potentially and where exactly is the scam here?
you posted a lot of chat screenshots (it's good that they can't be shown, what would this thread look like), can you single out the most important ones, it's very tiring to open them one by one.
Because as you play some of the games, it builds up a meter that can trigger the bonus. This meter stays at the level you have built during each session. So when they changed provider this progress was reset to 0.
I was promised by support this history would be restored and now I’m told it won’t be. This effects 100s of players not just me.
The whole chat is there for clarity.