Besides pages “scannered but not indexed” many pages have been really indexed by Google in pages “indexed but not sent by sitemap”. Site pages have grown a lot.
Crawls errors 404 have appeared. In this case am not sure is linked to your plugin but the date in which they have appeared coincide. Links as:
https://www.ricetteromane.it/primi-piatti/pasta-con-broccoli-e-guanciale/link%20rel=
I like your plugin a lot but can’t switch it on and verify your solution, up to these mistakes will be deleted from search console. Visits suffered of this.
If you like to give a sight, passing to me your mail, I could give to you a search console account.
Sorry but can’t verify your solution now.
Have a good day.
Vincenzo Serino