Very nice plugin, however not working with Gutenberg enabled sites.

Very nice looking plugin. Easy to set up and configure, however, have 2 major issues. First is that haven’t been updated for some time (10 months) and due to that some compatibility with the latest version of WordPress causing big issues. For my blog, where using Gutenberg editor ( Classic one) there is no possibility to update post/page (unable to save!) when the plugin is enabled. When is off, issue not exist.