@dunfida yes Windice is a legit site and those numbers are accurate too, because Windice has a forum where they promote in house which allows them to receive lots of members daily.
Also I think earlier the count was higher and on some days it might even be higher, but if you yet doubt it you can ask the support because only they can provide more specific details as per their terms and conditions.
No need for contacting their support just for some counting users verification.Its just a personal opinion though and thanks for replying out.