Activation limit reached (error code 12). Unable to activate on new devices.
This means that all of your license copies have been occupied.
If you want to switch to another computer, please deactivate a copy in advance. If you intend to add users, please purchase more licenses.
The deactivation steps follow below:
1. Go to Start- All Programs - Gaaiho - Gaaiho PDF Suite - "License Information" dialog box
2. Click "Deactivate" button on the top right corner (if the software is not activated, it displays "Activate")
3. Move to the new computer and enter the serial number to activate
If something irreversible (such as HDD crash) has happened to your computer and you cannot deactivate it in any case, please refer to the below post:
- How do I clean activation record online?
- Enterprise license management (for perpetual license 10 and above).