As far as I can tell the lines:
InsurancePolicyRegister *--> InsurancePolicy *--> Car
InsurancePolicy *--> Person *--> Address
are not correct and should be split into:
InsurancePolicyRegister *--> InsurancePolicy
InsurancePolicy *--> Car
InsurancePolicy *--> Person
Person *--> Address
The "Code Formatting button is a bit hidden, it is the word "Formatted" under the "button" / "drop down" that by default reads "Normal" (3rd button on second row next to "Font" and "Size")