After the last update, with more options regarding AI, the Aria function disappeared from the sidebar. Also, from the toolbar, while there is an option to ask Aria, when clicked, a message appears stating that the page has been blocked. It cannot be activated from the keyboard shortcut. It is only still valid in settings, even with the option activated.

@stefanvd: Cool. It worked!. Thx.

With Opera Dev it doesn't work. The icon does not even appear in the toolbar, to be fixed.