I am Korean.
My teacher gave Education Serial key to me.
But I don’t know how to use this serial key.
Please tell me how to use education subscription serial key.
It is not possible to activate more than one machine at that time. The fastest way to work through your lab is to activate silently using this command line argument:
C: \ Program Files \ Unity \ Editor \ Unity.exe ""-batchmode -username email@example.com -password XXXXXXXXXXXXX -serial E3-XXXX-XXXX-XXXX-XXXX-XXXX -quit
The email address and password you use will be the same as your Unity account. If you are a teacher / teacher, create an administrator account that will be used to activate manually.
Did you try the key on a different machine before? Maybe you should ask for a new key from your teacher. If this problem still continues then probably you have an outdated version.
Maybe you should ask for a new key from your teacher.