"Reinstall" simply means your software is already up to date. It's not an instruction, a warning, or a sign your plugin is broken.
The three button states:
Install — you haven't installed this plugin yet
Update — a newer version of the plugin is available
Reinstall — you're already on the latest version; nothing new to download
Once your plugin is fully up to date, the button will permanently say "Reinstall" until a future update drops.

