Hi Sylvain,

There is only 1 licence associated with a single computer and thus you get a single licence for purchasing Reviversoft product and that can be used on 1 computer only. 
Purchase and registration of PC Reviver includes 12 months of:

• Unlimited use on 1 PC
• Unlimited products updates and upgrades
• Unlimited premium support.

Your software's license code is associated to the computer’s hardware and system configuration when you activate it. The license status may get affected when you make changes to your computer's hardware and Operating System, or when you replace it with a new computer.

So Product key for the Reviversoft product you have bought will not work on any other PC except the one on which it has been installed. Therefore you need to buy another licence for using it on the second computer.

If you need further assistance, you can contact the support team at the below link and your query will be resolved as soon as possible.

http://reviversoft.c...

I hope it helps.

Regards,
Lokesh