How to trade Crypto on MT4?

 

So, I usually make forex bots on MQL4 to trade forex.

Lately, I have been looking to enter crypto-algo-trading but I am unable to understand how the order sizing works for crypto (from mt4).

I opened a 1:1 leverage account but somehow, there still seems to be some sort of margin.

Some tips or explanations would be appreciated. Thank you

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