The best and ONLY way to solve your situation is to work directly with your BON. Sadly, no amount of advice on this board can help solve your issue. Hiring a lawyer may also be to your advantage. Going forward, make NO assumptions and get everything in writing from your BON. You are literally at their mercy at this point. Hope things turn out favorably. Good luck!
As stated on NCSBN website: https://www.ncsbn.org/1268.htm
NCSBN may cancel or withhold your results if there is a basis to question the validity of the results for any reason, notwithstanding the lack of any evidence of your personal involvement in irregular activities and/or for your failure to adhere to the Confidentiality Agreement. Evidence of invalid results may include, but are not limited to, unusual response patterns, unusual score increases from one exam to another, failure to obey exam administration rules, or observed irregular behavior.
NCSBN reserves the right to cancel or withhold any test results when, in its judgment, a testing irregularity occurs; there is an apparent discrepancy in, or falsification of, a test-taker’s identification; a test-taker engages in misconduct, or irregular behavior, or violates NCLEX Examination Candidate Rules.