#funds-stuck

My savings are stuck on QuantroNetwork after 'tech support' helped me, is it all gone?

Hey everyone, feeling pretty sick to my stomach right now. I was using this platform called QuantroNetwork (quantronetwork.com) for a few months, putting in some ETH and USDT. The returns looked good, honestly, and I even made a small withdrawal once which worked, so I thought it was legit. Last week, I tried to pull out a larger sum, about low five figures, and it just wouldn't go through. I contacted their 'support' and they told me there was a 'tax issue' or 'regulatory hold' and I needed to deposit *more* crypto to 'unlock' my funds. I was stupid enough to do it, thinking it was the only way to get my money back. Now, even that deposit is gone, and they've stopped responding. I'm completely locked out. Is there anything, anything at all, that can be done? I'm in Cologne, Germany, and this was most of my savings. I reported it to the local police but they just looked confused.