user34331: I was doing mining with Bitknock but they closed the website without informing us.
I can't access my wallet. Here is my wallet address 
fnwg643zjnfwsqks

What must I do now? Should I acknowledge that I lost my Bitcoins?

user6441: Unfortunately, most of the "cloud mining" websites are ponzi schemes trying to disguise themselves as a cloud mining contract provider.
This site catagorizes Bitknock as a ponzi/scam dated back to November 2015. A little bit research could have made you aware of the dangers.
I personally lost dozens of bitcoin in such projects, even if I joined only the most secure looking. General rule of thumb: If it looks too good to be true, don't buy it.

34331: <p>I was doing mining with Bitknock but they closed the website without informing us.</p>

<p>I can't access my wallet. Here is my wallet address </p>

<pre><code>fnwg643zjnfwsqks
</code></pre>

<p>What must I do now? Should I acknowledge that I lost my Bitcoins?</p>
 6441: <p>Unfortunately, most of the "<em>cloud mining</em>" websites are ponzi schemes trying to disguise themselves as a cloud mining contract provider.</p>

<p><a href="http://kipicommunity.org/what-is-bitknock/" rel="nofollow">This site</a> catagorizes Bitknock as a ponzi/scam dated back to November 2015. A little bit research could have made you aware of the dangers.</p>

<p>I personally lost dozens of bitcoin in such projects, even if I joined only the most secure looking. General rule of thumb: If it looks too good to be true, don't buy it.</p>
