I just installed TinyMCE Advanced on my blog https://contenedores-maritimos.es and it does not work either.
Could it be that it is by using WP-Rocket Cache? Is that I have already had several problems with my blog for this other plugin, but I deactivate it and it still does not work, I do not know what it can be.
I hope you can help me, since the original WP editor does not bring all the funcinalities.
Greetings and excuse me for my English (Google Translator)