Refer the below link to find the solutions for all activation problems -
License errors Setup & Licensing
Hi everyone, I’ve gathered here most of the license errors that we have encountered during Studio activation. Please feel free to complete the list by replying to this post. “Device Id already activated, trial not allowed after code activation” After you have once activated a device with a license code in the past you cannot use the free edition on the same device - it is not an error, is expected behavior. After code activation, the device ID remains registered in the system and it does not …
Regards,
Karthik Byggari
ashokkarale
MD_Farhan1
Ajay_Mishra
postwick
Dheerendra_vishwakarma
Anil_G
chandreshsinh.jadeja
Gautham_Pattabiraman
vrdabberu
aravindbalineni123