I removed LT extension from Chrome and added again but always appear this message:
"If you have just installed or (re-)activated this extension, please reload the tab first in which you want to check a text.
A page reload may also be necessary when the extension has just been updated in the background."
I reloaded many times the tab, unistalled and installed Chrome, uninstalled many times LT extension also.
But LT always show the same message.