I got engaged with a start-up that offered stock as compensation while I had no work authorization. The company required me to send a form election 83b to the IRS that states I paid $0.33 cents per unit. So I always thought I could just pay for such units anytime considering this a purchase option with no obligation to own/pay for those units. The contracts say I will be given units in compensation but they also say that there should be no conflict of law. Many times I told the company about restrictions for F-1 students & that I intended to pay for units. Recently, the company went meet with the DOS at my school who is asking me to sign an agreement saying that I volunteered but also that the company will void any stocks. I want to keep my F-1 status & to pay for the units. Any advice?