you have 2 options actually to fix your issue , depending on the situation.
you can "move" the stick or your can "move" the channel
the easiest option is to move the stick , in that case just customize the account you have now with the channel on it to be your "work" account , open a new account using your personal email - lets say from another browser ( Roku logs you out from your account after a short while of inactivity but you never know so using different browsers from different account works just fine) - moving the stick is easy , just reset to factory settings and link the device to your personal account.
if you have. let's say couple of subscriptions attached to your device and account. it is a little bit "longer"
in that case - change back the email in the existing account and customize it as your personal account , open a new account for your "work" profile and:
1. you can ad your work account as admin for the channel you already have or ...
2. you can open a support ticket with Roku Dev Support (https://developer.roku.com/contact ) tell them what you did and ask them to move the channel from one account to the other.
Both ways are doable. Depends ....
Building a TV Channel can be easy … if you have a right tools ===>> https://tv-channel.info/