Can I submit to marketplace and target lower UE versions?

Hi, I use 4.18 to package my assets and upload to marketplace. I tested the assets on lower UE versions until 4.10.4. In marketplace submission page, I chose 4.10 - 4.18 as supported versions but it was rejected because my download version is 4.18? This doesn’t make sense. Do I have to package my assets using 4.10.4?