I bought Elewments 12 for laptop but want to also use on desktop. Do I have to buy second copy or the licence allow me to do that
Licence allows you to install, and sign in, on both but only one should be in use at any one time (the laptop / desktop scenario is the one this is ideal for). If you expect to be using the software on both machines simultaneously then officially you need a second licence.
Adobe's sign-in procedure monitors that no more than two machines are signed in at any one time, but the simultaneous use is an 'on your honor' thing.
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