Can I do a second merge dragons offer?

There's an offer on Revu that is giving £120 to reach 600 dragon power on merge dragons. I completed another merge dragons offer a while ago that was to reach foothills 3, and that was through swagbucks itself, not any offer wall. So if I complete this new offer, will I be credited? Or should I make a new google play account and then do the offer? Thank you to anyone who replies.