use another developer account for Line Login

Our app uses line login. The developer account that implemented this line login is owned by our company's vender. Now, my company wants to switch to another developer account that is owned by our company.

How can we make the switch? Will there be any consequences? What will happen to the user accounts that are already registered using line login on our app?

Thank you!

我們的APP有Line login功能，當初是用廠商的工程師閒置的Line developer帳號做的，現在我們想要換成公司自己的Line developer帳號，請問要怎麼做？之前APP使用者已經用Line login註冊的帳號會被影響到嗎？如何能不影響到？謝謝