@daniele280271 Thanks for your reply. We’ve addressed your questions individually below:
Can I uninstall yoast plug and the re-install it or will I loose all the meta data?
Yes you can uninstall the plugin and then re-install it without loosing any of your data or settings. The data and settings for the plugin are stored separately in your site’s WordPress database and are independent from the plugin’s files in /wp-content/plugins/wordpress-seo/
another question, to give you temp access: the only way it’s with the premium support?
Yes that is correct. If your issue requires us to take a look at your site’s setup, we aren’t able to do so here since this is a public forum. To do so it would require purchasing Yoast SEO Premium so that we can investigate this in that fashion.