I installed the button, but the inscription does not disappear

HI there are two ways this can be "fixed".

The first and BEST option is to just close the game completely and re-open it. The good old "turn it off and on again" approach. This alone should fix the bug and remove the text on the screen like it did for me.

If it doesn't for some reason, then you'll need to take the drastic approach. Make sure to have the cheat sheet mod, along with transferring all your items into a chest and making a new account.

Though I believe the first option will help you, if it hasn't already.