Yeah, you can tell that there are a lot of generators out there and they're all fakes, but I finally really found a working one! You just have to type in some info about your account, device etc., choose how many Credits and Coins you want, click generate and boom, you have unlimited resources.
I don't know if I can post it here in this subreddit, but I think it is worth to share with you, guys - I just found Bingo Blitz Hack, it's an online generator that generates free infinite Credits and Coins.