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You won't make profit from them.

What i've found in IQ Option is that they won't let you place trade niether on CFD forex or Metals (Gold / Silver) when trend is clear and you find a sweet spot to enter, You'll get limit error & in digital option asset closed right away, What they want is for you to enter when market sucks & no trend is there & surely you'll either hit SL & won't let you hedge as well (Limitations)

Just Run when you get a thought of trading IQ options, Rest your choice.