The plugin now supports versions 1.20.6 to 1.21.5. The plugin will no longer work for lower server versions.
Due to this, the banner format has been changed. Consult the default config.yml on the plugin page to make changes. You can use https://docs.papermc.io/misc/tools/item-command-converter/ to convert old banner patterns to the new ones.
Fixed not being able to put on hats when force-remove-helmets was off