How can I use TeamViewer apps in a commercial environment?

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Using a free license for none private support during a short period?

Today I have a free license that I use only for private support among family and friends. I have now been asked to help a person that need my support, not in a private but more official situation, during a period of 1-2 months.

I don’t want to be disqualified by using my private license for this without permission. My question is; Is there a way to handle this during such a short period. If so, how do I proceed?