No "Proving ground" in Epic version

There is no "Proving ground" button in Epic version unlike Steam version. So it should be?

This is Epic version:
b6815784a253.jpg

This is Steam version:
551fd5cca0cf.jpg

Can someone explain, will this be fixed or will it stay like this?

last edited by oldman777

Everything is clear now. Don't need to buy anything in the Epic store.