Does Express Wages take your whole paycheck?
No. Express Wages only takes back what you transferred — nothing more.
Any amount you access early is deducted from your next paycheck, and that's the only deduction. The rest of your pay arrives as usual through your employer's normal payroll.
There's also a limit on how much you can transfer in the first place — up to 70% of what you've earned, or your daily limit — so a transfer is only ever a portion of your pay, never the whole thing.