Sorry for that.
As it may be caused during procession, we are wondering whether you could have it washed to see whether it'll be clean.
It will be appreciated if you could have a try.
But please do not worry that if the stains if unremovable, we are sure to make you compensation like resend you one or give you other prefered solutions.
Hello. I did it but it seems it can't be removed, i've posted it in a community where i am and people said that it's "burned" or something like that and that it can't be removed :(