You can load your account in several different devices at a time. However, we don't recommend using any other devices than your own while playing Rumble League as it's unsafe for your account and against our policy.
If you log in to your account on another player's device, your progress will be saved on this device allowing the other player to access your progress and to make unwanted changes to your account, including in-game purchases, trophy changes, and event name changes.
In such cases, we will not be able to restore your score, cancel purchases or restore your account access.
Please also note that sharing your account login information or allowing others to use your account is a violation of our Terms and Conditions section 188.8.131.52 and may result in us deactivating your account. For this reason, we recommend that you keep your account, devices and login information safe from other people to ensure a trouble-free gaming experience.
You can read more about this as well as our commitment to fair play in this article.