Language file Problem

[alcobra]

I installed a language file and there was a mistake and the forum became all unknown symbols And when you enter the Forum Control Panel it is not accepted either How can I delete the language file and retrieve the original file

https://www.3nageed.com/vb

i put the tools.php file
Inside the Install folder
So


i've covered the Language

And then delete the install folder
But the problem has not been solved

[iA1]

The site looks ok. Is it resolved?