Advice on palladium ring damage

Hi there,

Hoping someone can help as I'm currently way past my knowledge on this..

I bought a wedding band which is palladium. We've only just managed to get married due to the pandemic, when I finally wore the ring I noticed that there appears to be some chipping/quite tough round the edge of the ring.

I've sent it back to the retailer and they've told me that it is general wear and tear and there is no issue with it. I've attached the best picture I can here which hopefully highlights it.

I'm trying to find out if that kind of damage is possible with me wearing it for about 8 days fairly infrequently.

Any advice would be greatly appreciated! Both on the item and durability of palladium.

Many thanks

Mark PXL_20210110_135823031~2.jpg