Can not restore purchase – Talking Pocoyo Free HD Review

I purchased the No Ads version of this app and Talking Pato on my iPhone. I tried to restore both of my purchases on my iPad but it doesn't work. I have tried it many times but it says error. I wanted to give one star for this but my son loves Pocoyo and loves the No Ads version for both apps so another star for that. If I can restore my purchases on my iPad, these apps would have been a 5 star. But for now, I give both apps 2-star because it's disappointing to not be able to restore my purchases. Please fix this.
Review by ykatili on Talking Pocoyo Free HD.