I have the same problem today, July 29. I have never used it for commercial use at all. I don't even use it to transfer files, just to control my personal servers remotely. I hope this is just some new bug that they quickly fix, otherwise I guess I'll just have to switch to "Third party product". Luckily, there are alternatives if TeamViewer wants to alienate its user base, but I hope that isn't the case. I understand that they're not making any money from me, but if you claim to offer free software forever under specific conditions, and then kick people off for not following the rules even when they are, it makes you look like a bad company. My 2 cents.
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