This is the first time I've heard of Exchange called Vindax. Luckily I found this thread so that I am not exposed to scams.
Personally, I will avoid some exchange which not has any legit pieces of information. That makes me save until now.
But Vindax is very known as a scam exchange most people know that in the community. Because i saw many scam accusation thread in the previous days. Why still a lot projects team going IEO in these scam exchange. In case of lower listing fees some greedy scammer ruined their legit projects in this exchange.