Upgrading Jewel at Pandora Warp 1

I tried to upgrade the ancient Opal from lvl 1 to lvl 2 5x and Pandora keeps saying fail. Is this normal or is it a bug? Lost like 50m. T_______T

the rate is pretty bad, so that sounds about right

Ok, Thanks. I’ve tried the garnet, ruby, sapphire and emerald jewels and they seem to have a reasonable upgrade chance. Is the Ancient Opal the only one that has a low upgrade chance or are there other jewels too?

You should also equip/use as many luck items as possible when you try to upgrade.

Thanks, I’ll try that.