Adsense just a white block

Hello,
I have had adsense for one year. This week I changed my theme to “I am social” and ever since my ads are not showing.

I have added the insert header/footer pluggin and pasted my adsense code there. I have tried numerous pluggins and widgets but still getting blank white spaces.
Please let me know how I can resolve this.

Thank You,
Nichole

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