I sincerely wish you to get your coins back. But I guess that the opportunity to use their wallet and not to lose assets is something about good luck, but not a usual thing. If they would steal all money by all users, they would quickly get imprisoned.
Instead their "partial scam" allows to act like a usual service.

It's like their customers "reviews": you see someone who says "great wallet, i reccomend it" and you see someone telling that he got scammed. And you are like "Well if they would be a scammers there would be no good reviews, so maybe it's just an occasion"

Some more trickes by freewallet scammers disclodes here https://freewalletscam.com/freewallet-app-reviews-is-it-safe-and-legit/