I encourage you to find a way to stick it out. Make more time to study, find friends to study with, hire a tutor... LPNs job options are miniscule compared to RNs (even ASN) plus pay is substancially higher.
The Missouri State Nursing Boards does allow Excellsior College grads with Associate Degree in Science (RN nursing program) to work in Missouri after they pass the RN Boards Exam. I don't think it matters who helped you study. What matters is that ...