You cannot activate your Community License on the same device that was previously activated with the Trial.
You will find more information here under the header:
Device Id already activated, trial not allowed after code activation
Anil_G
ashokkarale
jinal.shah
Gautham_Pattabiraman
postwick
chandreshsinh.jadeja
vrdabberu
Ajay_Mishra
sven.wullum1
Vyshnavi_Nalumachu