If there are any bugs then of course they should be corrected, but that does happen sometimes and it is not a crime.
My point is that from some comments it can be concluded that since OP bought this script it might be dishonest. This type of thinking is a bit unfair to me. If someone have doubt should be cautious, but this should be done for any new casino. I just think everyone should get a chance before an opinion is given.
Buying script from 3rd party company is absolutely fine, but the buyer should aware about the fact. I suggest you to read this
thread. It is a thread about many casinos (about its provably fair system) which uses the same script as 7slotz. Every new site get the chance ofc, but we are also need to be careful. The fact says that most casinos using this script are not worth to trust.