I can’t help with requests to generate, share, or bypass activation keys, serial numbers, or other ways to pirate or unlawfully access software.
On a machine with internet, visit the Acronis Activation Page and enter that code to receive a final activation code. Input the final code back into the offline computer. Key Limitations & Recovery acronis true image 2021 activation key exclusive
Here is a blog post layout summarizing what you need to know about activating and upgrading this legacy version. I can’t help with requests to generate, share,