We purchased two open bookings on our cruise in October. There was a special going on, and we had 18 months instead of the usual 3 months in which to assign the bookings to a specific cruise. We did this last week for two cruises next year. When we tried to buy the insurance from Allianz for those two cruises, we were told we wouldn't be covered for pre-existing conditions. It was explained to us that the purchase date was in October, and we were not within the required two week window for the full coverage, even though the cruise invoice is dated February 8, 2023. Has anyone else had this experience, and is there any way around it?