Hello @Randy89,
I did not know you could change the admin username, you learn something new everyday in this forum about the Peplink products, I’ll have to go figure out how you did that.
Can I ask, when you changed your credentials and found you could not login, did you also retry the login of username “admin” with the new password?
Have you considered using InControl2 with 2FA enabled? There is a guide by @Alan here on securing your routers via either the device console or the InControl2 platform (we prefer the InControl2 platform ourselves).
Happy to Help,
Marcus 