Character Accent Menu doesn't appear anymore in macOS High Sierra Firstly, this is for High Sierra

I've already tried this step:


  Character Accent Menu doesn&#39;t appear anymore in macOS Sierra



Add a second language like French in Settings -> Keyboard -> Input Source
When I type defaults read -g ApplePressAndHoldEnabled in a Terminal
I got a 1
Go into Settings, Keyboard and make sure the Key Repeat slider is set to Slow and the Delay Until Repeat slider is set to Short.


Even if I restart the Accent Menu doesn't appear.

And this is my Mac:


  macOS High Sierra | version 10.13, MacBook Pro (Retina, 15-inch, Mid 2015)
Like @TomGewecke said the only way I found to solve this bug was to create another user or to reinstall Mac OS High Sierra