Start with the pages nobody markets: terms of use, risk disclosure and the withdrawal policy. A platform comfortable with scrutiny publishes them in full rather than reducing them to three friendly bullet points.
Then look closely at how returns are described. Wording matters: 'past performance does not guarantee future results' is a standard disclosure, while a specific monthly percentage presented as an expectation is not.
Finally, test the support channel before depositing, not after. Ask a concrete question about withdrawal timing and see how quickly and precisely it's answered, that reply is a fair sample of what you'll get when it counts.
Reading a statement line by line
A statement is a record of movements, not a verdict. Deposits, withdrawals, positions opened and closed, and any charges each appear as their own line, and the balance at the bottom is simply the sum of everything above it.
The lines worth checking first
The opening and closing balance for the period, plus any line you can't immediately explain. One unexplained line is worth an email; a pattern of them is worth a phone call.
Charges in plain sight
Anything deducted should appear as its own labelled line. A charge that only shows up as a smaller balance is reason enough to ask questions.
Keeping your own record
Download each statement as it's issued rather than assuming the account stays open forever. A folder with twelve files answers most questions faster than any support queue, and it's the record you'll want if you ever need one.
Investing carries risk, including the possible loss of some or all of the capital you put in. The value of investments can fall as well as rise, and you may get back less than you originally invested. Do not invest money you cannot afford to lose.