I did not receive an Activation Link (purchased 5 days ago!)...how to get a hold of somebody?

I purchased Teamviewer after trying it out using the Free version. I bought a license 5 days ago and still do not have an activation link! There is a 7 day guaranteed return...may need to use since I cannot get into the product I ordered! I received the email with the Activation guide but no link to actually activate the product.

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