It is about a very bad reputation and many precedent and previous cases here in the forum, about people getting their accounts terminated and without a refund.
Since you seem to be slightly interested, I am sure you have checked the reputation thread allegedly opened by 1xbit themselves where they claimed to be trying to solve the issues, still have not succeeded.  

We have combined issues posted by bitcointalk users so you can see the progress and decide everything for yourself.

Fully restored accounts:
1) Tim1996, 1 ETH
2) h4ns, 4,3 BTC
3) Aeshman, 10 mBTC
4) 2kevin2, sum not mentioned
5) MrBrightside1, 7,4 BTC

Refund cases:
1) sezulus, 59 mBTC
2) Fabi86000, 20 ETH
3) jennyoller, 40 mBTC
4) Holen88, 100 mBTC
5) Blogab, 63 mBTC (+hashes)
6) bestneon8, sum not mentioned
7) zekiman, sum not mentioned
8') elninnohameni, 200 mBTC
9) sammichael, sum not mentioned
10) dammlyn, 4,6 LTC
11) aksez, sum not mentioned
12) haluktr, 68 mBTC
13) merceniumeras, sum not mentioned
14) bleedrulez, 20 mBTC
15) zackhirarmador, 154 mBTC
16) kullerimer, sum not mentioned
17) manul-ayn, 133 mBTC
18) polinagil, $460 usd

Post with a few more arguments

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