If you can stay on a platform for a year without any scam accusations, that is positive and that's where people will start to have trust your services. I am not an expert about these things and I do not have any stats to back my claims. But, I guess the managers will agree with me.
I do not think there is any scope to be scammed by a platform like Bitwinup. Everything is done on chain. Besides the team is earning from the fees of the pool for every trade. They are not holding any coin for you. So platform like this a scam protected :-D