Option to turn off Q&A challenge?

[rgf100]

As far as I can see, the only way to turn off the Q&A challenge is to delete all the questions? Seems a bit odd, you could have lots of questions but just want to turn it off temporarily for whatever reason. 

Alternatively -  please make the option to turn off the Q&A challenge more prominent, I couldn't find it.

[Elena-Viorica]

What Q & A challenge?

[Simon Woods]

1 hour ago, Elena-Viorica said:

What Q & A challenge?

It's an anti-spam feature.

ACP -> Members -> Member Settings -> Spam Prevention -> Question and Answer Challenge

Or, use ACP search for "question".