Thanks for the post
There could be multiple reasons why the activation is not working on those devices. We will improve the messages in the future to better inform users on what is wrong.
In this particular situation, I would suggest connecting to the devices and checking the follwing:
TeamViewer version. Make sure it is the latest one at least for Mac. OS.
Go to TeamViewer Options -> General (for Mac OS TeamViewer - Preferences) and check the Account Assignment. I would suggest to remove the current account assignment and then assign the device again with your account.
Make sure the devices have a personal password setup (Options/Preferences - Security)
For Mac OS check if the setting to Start with the system is selected ( Preferences- General)
If after these steps still, the installation is not working please contact our support to get assistance:
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