I think I ran into this a while back,
the problem is if your using gold granted from eliminations via teams settings or island settings etc, it is stored as a Resource instead of a currency (or something). You have to change to giving out the currency gold
The best way to give a player gold from eliminations is to use an Item Granters grant function with an Elimination Managers, on elimination event.
In the item granter add the gold item from the list called “golditemdata” ( i think thats its name) this is the consumable version of gold and should work with the conditional button which also uses the same golditemdata from the item list.
I thought this would have been fixed by now, its a bit weird having two types of gold.