Problems

Every exchange has got their own service & group of people to post recommendations to the exchange users. No exchange has a monitoring body to track the trades whether they ended up in profit or loss. Majorly involves market manipulation in such practices.

Cryptocurrencies have gained acceptance across the globe in the last few years, but we still lag a platform & system which has decentralized stock trading & investing, in turn accepting crypto as a currency to buy and sell stocks across the globe.