Without seeing the master policy and the evidence of insurance I have to guess a bit. I assume that the master policy is used for every loan but means nothing by itself. Once the evidence of Insurance is issued, the combination of documents (master policy and EOI) creates the contract of insurance.
Since this is not a FEMA policy it must meet the definition of private flood insurance contained in 42 U.S.C. 4012a(b)(7) or contain the compliance aid statement. Since it does not contain the correct compliance aid statement, a full analysis of the private policy compared to a FEMA policy is required.