How to load Grammar check software

I use Libre office 6.103 version in my system - Dell AIO 3459 Window 10 Home. I installed Grammar check and it was working fine and I was completely satisfied. The computer was taken by the dealer for some minor adjustments. Afterward, the Grammar check stopped functioning while typing, I am not able to set it right. Kindly advise me a detailed procedure.

Thanks,
Vyankatesh Lokre

Was it a spell-check or a grammar check? In case you have used grammar checking, then you must have installed a LibreOffice-extension. Some of these extensions require a JRE (Jave Runtime Environment). If that was the case, the dealer may have removed the JRE. Please check if LibreOffice still recognizes a JRE.

Did you try reinstalling it?

Why do you post a question as an answer. Please read Getting Started