No incident notification commitment to the insurer is stated
You have not committed to a time within which the insurer is told of a security incident. Section 500.17 gives the carrier seventy-two hours to notify its own regulator, and that clock starts when the carrier learns of the event, not when you do. A reviewer therefore looks for a vendor commitment inside that window, and treats a longer one, or none, as a term to be negotiated before the contract can be signed.
To fix: Commit to notifying the insurer within seventy-two hours or less of discovering an incident that touches their data, write it into the contract and the incident response plan, and record the number here.