Is it possible to appeal or seek other post-conviction relief, in general the answer is Yes. In NJ and the other States with which I am familiar, these types of proceedings are time-sensitive and fact-dependent. I strongly urge you consult immediately with an experienced WI defense lawyer to ensure that your appeal/review is properly filed and within the applicable time limitations. When you are having the consultation, you can also discuss all of the defects you have identified to determine which can help to support your appeal/review. Good luck.
DISCLAIMER I do not practice law in your State. This answer is provided for informational purposes only. This answer does not constitute legal advice, create an attorney-client relationship, or constitute attorney advertising.
There are several questions I would want answered before I began to answer this question. It appears you are considering some form of post-conviction relief based on the performance of your trial attorney. There are extremely tight time limits on this in Wisconsin. Assuming you were convicted, you would have been given a form advising you of your appeals rights. That form refers to a twenty day time limit. You may have issues worth advancing. You should be in touch with an attorney licensed to practice in Wisconsin immediately.