So my money is gone?
Provably yes if they are confirm scam investment then you've been scam already. Just take it as a lesson for now so you will not do the same mistake again in the future. If you found investment like this just stay away and remember the lesson you learn today before trusting any website with your hard work money.
There is already some old thread about this zumminer which a certain user do have problem https://bitcointalksearch.org/topic/problems-with-zumminer-3048085
I dont know why there are people do really get lost on using up these shady applications/sites/platforms etc. if there are much better options or
known ones that had been commonly used by people. Also when you do access the site domain then you would be greeted up by Plesk web host edition input.