I just ran into the same issue:
I haven't used the program for months and logged on to help a family...within minutes it disconnected and when i reconnected i was meet with the Commercial use suspected" as well.
there is NO chance my use could be determined to be commercial by any sense of the word.
I found a teamviewer page that indicated:
"There can be cases where TeamViewer incorrectly detects commercial use and limits your connectivity even though you don't violate the license conditions. In such cases we can investigate and unblock the software for you. If you believe you use TeamViewer exclusively for private purposes, please contact us through this form for TeamViewer Commercial Use Suspected."
the link is:
https://www.teamviewer.com/en/support/commercial-use-suspected/It seems the ONLY way to maybe get it removed is to use that form to request they investigate, which i have done, and attached the last log file.
Says it can take up to 30 days, we shall see. If they deny me then something screwy is up because there is NO way , again my use could be thought to be commercial.