Their server is offline.
You went in too fast, most likely due to the recommendation of someone you know.
Checking a website is not that complex.
Its a bank or any other financial service so they should not hide,
You can check the age of the domain, the age their company has and so on.
Most apps and services let you deposit, but paying with them or withdrawing is impossible,
I was interested in the project that was introduced, when I checked the company's website I also thought that it was real and would really pay off. with only 4 days of work, I thought it wasn't too bad but didn't know if the ending would be like this.
they also confidently told me "you have to pay $50 first because you recently joined our project."