hi OP, have you used this bibox exchange often, i saw their review on trustpilot and many complain about their withdrawals that bibox has never processed,
Trustpilot rating is not trusted because it was plagued by fake review and user that has an isolated case on exchange that often gives negative feedback. Even Kucoin has a 1.5 Star rating in there despite Kucoin is much popular than Bibox with a little bit high review.
Bibox exchange is same country with Kucoin that based on Singapore. They are not that huge but they have a decent volume on their exchange. I use them for quite some time for buying exotic tokens that is not listed yet on huge exchange. OP doesn’t have any proof so I will not judge the exchange quickly.