It does not look like those investors are even kept in the loop let alone seeing any kind of a ROI. It would appear you just took some investors money and then did nothing with it and are not paying out returns or returning their money?
https://burstforum.net/topic/8111/zoomdice-com-casino-asset
We currently not accepting burstcoin in zoomdice for some technical issues. That's why we are not paying dividents there. and i updated them there about it. I also told them we will soon add burstcoin back to our site and continue paying dividents.
And about the ROI, i raised 27k burstcoin from there, and paid around 7k as dividents while burstcoin was active in our site. Then our site was offline for 2 months for update we came back online 1 month ago. And i promised them there i will start paying dividents when we re-add burstcoin. We are planning on adding burstcoin by 15th april along with few other coins.