Just use a new SD-Card to flash. In that case you can always fall back. Hower something is wrong with your current SD as the Overlay is fully occupied as @gkkpch already mentioned.
Peppy_meter works like a charm on Volumio V3.
Just use this download. And the instructions as given under Download as Plugin
- If you made custom templates for Peppy_meter make sure to back them up (/data/plugins/miscellanea/peppy_screensaver/peppymeter)
- Same goes for the IR-Remote-Controller plugin. Backup your configuration (/data/plugins/system_hardware/ir_controller/configurations)