Be careful asking questions like this. Forex mentors who want to charge a lot of money and/or want a cut of your money (via IB commissions or % of profits) are common. Successful full time traders with enough time to properly mentor you are rare.
Why should you worry if they are your IB? Simple - they get a cut of the spread on every trade. This gives them a financial incentive to convince you to over-trade your account.
Why should you be cautious about them wanting a cut of the profits? They may decide to take high risks with your money. If it goes badly, they've only spent a little time. If it goes well, they get a cut of profits . . . until the day that it goes badly.