Their company is
https://1pool.ltd/ and they say funds are safe.
Time will show whether they take the road to hell or the road which btc-e took after their experience with FBI. That guys formed a new domain and gave back all the users funds. We will see.
https://www.sec.gov/news/press-release/2018-218addition: only the domain has been seized. As I see from the about page, the company is registered at Marshall Islands where the jurisdiction of FBI does not exist.
I'm under the impression that the servers are also seized by FBI because the servers are located in the US . Its just scary though how Uncle Sam can seized anyone even without proper jurisdiction just like what they did on BTC-e.