You need to remove the conditions on your residence which you can file late. The fact that you have divorced does not mean your petition cannot be approved. Additionally, there is no need for you to be working "under the table" during this process. A competent and experienced immigration attorney will be able to get your proof of lawful status during the pendency of your case and it seems like you are not being properly advised.
There is no requirement that you be represented by an attorney. You can do anything you want by yourself. Whether that is a wise thing to do is another story. There is an old adage: He who represents himself has a fool for a client. This is much more to immigration then just completing forms and it appears you have a complicated case so retaining competent counsel would appear to be a wise move on your part.
If you cannot afford counsel, contact organizations like the Legal Aid Society of Palm Beach County or Catholic Charities so see if you qualify for pro bono representation.
While this answer is provided by a Florida Bar Certified Expert in Immigration and Nationality Law, it is for general information purposes only and an attorney/client relationship is neither intended nor created. You should seek out qualified counsel to review your case and provide you with advice specific to your situation. Call +1-561-478-5353 to schedule a consultation with Mr. Devore.
You do not have to have an attorney. However, these cases are very complex and I doubt you will be able to successfully handle a waiver case on your own.
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I agree with my colleague that you can still file late and there is no need for you to be working "under the table" at this point. You probably should have competent counsel for this process if you are not sure what you are doing.
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