HVN works. They keep addressing accountants in Slovenia to use their platform.  HVN problem is that they was not able to break out of Slovenia. Not capable team. Definitely not a scam.    

Many ICO projects do not have a capable team. If they would be capable of doing successful project then they would not need to make an ICO in the first place and would found themself the normal way through banks and angel investors. They of course make a research to see if team can do it or not.