Disable plugin

Vorrei disabilitare questo plugin ma non riesco. Anche se seleziono il flag “When the plugin is deleted from the Plugins menu, also delete all snippets and plugin settings.” il plugin mi dice che non è possibile disinstallarlo con snippet attivi sul sito.
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I would like to disable this plugin but I can’t. Even if I select the flag “When the plugin is deleted from the Plugins menu, also delete all snippets and plugin settings.” the plugin tells me that it is not possible to uninstall it with active snippets on the site.