Sometimes carriers deliver packages of a solar kit separately. The solar panels are quite big and heavy and don’t fit every delivery van. They might bring smaller packages with one vehicle and the bigger ones in another. This can take up to 2-3 days between deliveries sometimes. The easiest solution is to call the carrier and ask where the remaining parcels are.
I only got part of my shipment, where is the rest?
In short: No need to panic, it will arrive.
Updated this week