DuckDuckGo doesn't work with screen time limits

I saw a previous question asked about this and it wasn't fully answered other then telling the user to update their software. That doesn't appear to be the issue.

We are trying to figure out how to get DuckDuckGo to work with Apple Screen time limits. It doesn't seem to work at all. Everything else on the computer responds to the limits and when we use Safari or Google Chrome, specific websites are limited per our instructions in the screen time limits settings. But anything can be accessed if our kids are using DuckDuckGo. Is there a workaround??

Thank you