App rejected due to Play protect warning

I tried to submit the game using Unity UDP, but rejected on samsung store due to play protect warning?

Why is that, I didnt upload my app on google play and may not want to do so probably? Is it mandatory for Galaxy store that my app should be on goigle play first?

Regards,

Please contact support for this issue. This is a very common issue and is different for every seller. They are very effective in getting it sorted out.

Ron
Samsung Developer Relations

I am having a same issue why this happens with me.

Hello,

Since Samsung tests on real devices and Android has Play Protect in all devices now… Samsung cannot test your app because of this issue.
There are a few remedies
File an appeal see details in THIS POST
Just upload your app to Play Store and get rejected wait a few days and submit to Galaxy Store
use a 3rd party signing tool that seems to work for some
Contact Tech Support if none of those work.

Ron
Samsung Developer Relations