But the problem is How would the company pays you if you cannot comply to the service they are looking ? there is no Free satoshi here .

Try to rank up at least member rank so you can afford wearing the Signature ( as that is what this service asked, "SIGNATURE CAMPAIGN") and after that check once more if there is available spot for you , but i'm sure because of the high Value of Bitcoin now ? it is hard that there will be someone Leaving the campaign , unless being removed for some reason.