Making edits to the finished site

Task
Site-directory on Laravel VueJS, almost ready to launch.
Current tasks:
Site address: mymedpharminfo.ru.
What to do:
1. Correct the text in several places.
2. Correct a few internal links in the directory.
3. Enable the display of special characters on resource cards.
4. In the About section, replace the link to Google Disk with a link to the PDF file on the hosting.
5. In the admin room, you need to update the text editor (TinyMCE) to write blog posts. For family reasons, I took a long pause in the development of this project, and at this time, apparently, the installed version of the editor was replaced by a new one.
6. Configure Google Analytics and Yandex.Metrica.
7. In the users personal account, you need to add the ability to subscribe to the sites newsletter and the ability to unsubscribe from news and subscribe to the blog. The blog subscription button is already on the blog.