Fruit is dry with no juice. It has blossoms on it now. Are we pulling it too late?
Maybe due to late harvest, but I suspect that the tree is underwatered. Citrus like deep flood irrigation especially when forming fruit; try to achieve 10 or 12 inches of penetration.
Fertilize spring and fall with a complete organic citrus fertilizer.
https://www.gardeningknowhow.com/edible/fruits/pomelos/pomelo-tree-care.htm
Thought this was a lemon tree, but this year we are getting these?
It could be pomelo fruit which is similar to grapefruit.
https://www.gardeningknowhow.com/edible/fruits/pomelos/pomelo-tree-care.htm