Blockdex 

SCAM ALERT - DO NOT DEPOSIT MONEY - SCAM
Without any shadow of a doubt this is 100% a SCAM, do not and I repeat do not deposit any funds to this site, you will never see it again.

You cannot withdraw your funds unless you deposit another $850, and what is the reason for that, I can tell you it is just to get more money out of you.

Also none of the emails work and you receive the following message.

"Address not found
Your message wasn't delivered to blockdex because the address couldn't be found or is unable to receive email."

Also, the links to their API documentation do not work, you get a "404 page not found".

I will be reporting this to the necessary authorities as they must be scamming 100,000's of $'s

Be warned, I got away with it lightly, and as they say "f it is too good to be true it usually is".

The ironic thing is to make matters worse is on this review for Trsutpilot it says "Let Blockdex know about your review. Just check the box and we'll notify them, and guess what that email address also bounces back

this website is a scam. once you deposit your money you will not be able to withdraw your money.

Once you deposit your crypto, you can't withdraw it. They'll require a "verification deposit" or an "insurance payment" if you are in a "high-risk of illegal transactions country" such as the US. They'll require those payments to be an exact amount, but don't tell you that they will take a commision from that deposit, so therefore, you didn't deposit enough. It wasn't for the exact amount required. They will then want you to deposit the exact amount again.

Witam dokonałem depozytu w wysokości 0,008 btc tak jak proszą by móc wypłacać lecz w moim depozycie było 0,00808 i uzanali to że źle dokonałem depozyt i proszą o kolejne 0,008 btc w równej wartości co jest prawie nie możliwe do dokonania ponineważ bybit ma prowizje 0,00011 i jak przechodzi na strone block dex to też się wartość nie zgadza

BlockDex Exchange Belongs to Telegram Group Crypto Sage, They are big scamer to force you to deposite 100$ now i have 105$ to Withdraw but it says your Account is STARTER (New) you need to deposite 0.008 Btc or 0.21ETH , then you can withdrawal your fund but Never ever deposit money. Please Report their Group and exchange.

Worst website.
Well designed scam.
Their telegram page is crypto sage. You can't withdraw money once you make deposit

Attention!!! Blockdex!!!, this is a scam orchestrated on telegram that makes you pay crypto on the exchange and then it is not possible to withdraw them. The telegram group is crypto Sage

Big scam: fake crypto exchange linked to the telegram page "crypto sage". On the telegram group they promise “daily pumps” and “arbitrage opportunities” to make you deposit assets on their fake exchange website. Whatever crypto you deposit there, you will never be able to withdraw. It’s a well designed scam targeting beginners in crypto trading.