This question is really hard to answer. Particularly you didn't specify exactly what server you are asking about. There is a big bunch of methods the owner can use to protect their game against multiple runs per device.
But even if you provide this information I guess people here in the forum can barely help you and you will have some hard weeks/months in front of you.
Here some ideas about how the owner of the game can stop you from playing with more than one client (take care just solving one will probably not work, because there are more protections):
- they can stop you from creating more than one account
- tracking your hardware id (solve by using HWID spoofer)
- tracking your ip address (solve by using private proxy/vpn)
- client side rules (can be as easy to solve as changing a registry or can be implemented complicated in the client/anti cheat)
- server side rules (like they set some rules eg. you get everyday from same account big amount of stuff for free [suspicious])
Just to give you an idea about how much work you can have with trying that. In some cases it can be easiest just to take a second computer
(not scalable). Or use cloud gaming
(expensive). Using the game in a VM is also a good option but also really hard to debug
(cost time).
