Unable to Edit Ribbon in Dynamics 365 Using Ribbon Workbench

Question

I'm having trouble editing the ribbon using Ribbon Workbench in Dynamics 365. Previously, in the 2024 version, it worked as expected, but now in the 2025 version, I'm unable to make changes. I receive an error stating that I cannot edit a managed solution. I can't figure out how to manipulate the buttons as I used to. Has anyone encountered this issue or know how to resolve it? Any guidance would be greatly appreciated!