Fire TV box issue

Got a Fire TV box with Kodi preinstalled recently.

Been using it ok until yesterday when I turned it on I get the “Amazon account” registration screen.

Prior to that the Amazon home screen with Kodi app came up as soon as it booted.

I never registered my own Amazon account on the box as I thought I’d lose Kodi.
The box had some spurious account name obviously put on by the supplier of the box.

I have another box with my own Amazon account registered.

My question is this……. if I register my own Amazon account on the “Kodi box” will I lose the pre installed Kodi?

Hope that makes sense.