FWIW I have just entered the OP's itinerary into the on-line tool
starting from AMM on Sep 9th
ensuring <24hrs in each of DXB and LHR
and approx 1 week between each of the other flights on the itinerary
and it is getting through to the pricing page (USD7210 plus taxes and charges of USD534.63)
So I suspect:
- the OP has >24 hrs at either DXB or LHR, or
- has invalid connections somewhere in his itinerary (eg < MCT)
- his total duration is below the minimum allowed (10 days) or over the maximum allowed (12 mths)
So CargoHoldFlyer - what message did the tool give you when it failed to book your itinerary?