Did you Apply your campaign tag?
No? Go back to your Content Tag. Click Apply Rule. Click [Apply] with the pop up window. Make sure that the Post move from Added to Existing as shown below
If Data is still not populating into a Campaign:
Make sure the tag logic is pulling in post, you can test this by checking the Preview in Content Tags.
Refresh your Campaign. From the Campaign List click on the ellipsis and choose Refresh.
3. Make sure the posts fall in the date range of the Campaign. You can edit to adjust the start and end date of any Campaign.
4. Contact support at firstname.lastname@example.org to report any issue.
Note: Campaigns update automatically between 5am - 6am EST.