You posted: and please show me where it states clearly that they do not cover fragile goods at all or even with insurance ....

I can't show you that because they do provide extra cover for fragile items if they are packed adequately  - however you must demonstrate they were adequatley packed when broken in transit  by taking the goods to the PO with the actual packaging they were sent in.

You are the one saying that fragile goods are not insured  - where have you got your information from ? It is incorrect if they were adequately packaged.

The Terms and Conditions of extra cover do not exclude fragile items if they are adquately packaged in accordance with AP instructions.