Hi Yulia,
Thank you for being a user of DW Q&A plugins.
We’re really sorry for what you have been encountered, that was HTTP ERROR 500, impossibility to deactivate as you mention.
However, instead of being disappointed about the error, can you please give us the honor to support you as well as the chances to fix it?
Can you please remove the 1-star rating and give us more information about the problems? We are sure to solve it.
Let’s make DW Q&A an error-free plugin for valued customers such as you.