Check out the following links...
https://community.teamviewer.com/t5/General-Questions/TeamViewer-thinks-I-m-using-the-software-commercially/td-p/8284/page/70
https://community.teamviewer.com/t5/General-Questions/TeamViewer-thinks-I-m-using-the-software-commercially/td-p/8284/page/71
https://community.teamviewer.com/t5/General-Questions/TeamViewer-thinks-I-m-using-the-software-commercially/td-p/8284/page/72
Good luck!
gfr92y