The credit agreement/note is the actual contract between you and the borrower. You are required to provide the applicant a disclosure that reflects the term of the loan for which they applied. It appears that the application disclosure is not consistent with the actual terms of the disclosure. If, at application, you tell the applicant that, “under no circumstances will your annual percentage rate exceed X% per annum, or go below X% per annum” and then the actual APR is outside of those parameters you have engaged in a deceptive act or practice.
You need to modify your application disclosure to be consistent with the terms actually offered to the borrower.