It’s never our intention to offend anyone with the ads we show, we sincerely apologise. Please send an email to firstname.lastname@example.org and let us know which ad included inappropriate content. We will get in touch with our ad provider and attempt to get it removed.
You can disable video ads from settings screen (via the cog icon on the main screen), scroll down, and un-check "Video Ads". This will remove the offers for hints and bonus pieces.