That’s another plugin called “Grow Social by Mediavine”. I activated “social sharing module” 6 days ago, but I deactivated it because it does not work, as I mentioned earlier and I did not know if you were going to respond. Still seeing are the icons, like this: https://bit.ly/3mFr9Io
In conclusion, the problem persists. It must be a problem with another plugin or the theme I use. Anyway thanks, I will find the solution.