Can you buy HoF crystals with Units?

If so where in the game can you do this?

All I have is the cash offers in the in game store.

There is no tab to buy HoF crystals in game

Comments

Should be under crystal section… gotta be a specific progression level

Mate I’m a Valiant player.

The only thing showing for me is the cash deals.

There are NO means to buy these HoF crystals with units. None.

It’s under your crystals tab, not the store tab.

I end up having to do a hard reset on my iPad Pro. Now they idea why they weren’t there.

After the reset they are there.

Tks everyone for helping out here. Managed to open 20 free HoF crystals and pulled Zero 7-stars.