Can’t login with DuckDuckGo Browser

I started using DuckDuckGo Browser on mobile recently (both iOS and Android) and am having trouble logging into Thurrott.com. When I try to login, the site either doesn’t seem to log me in (despite no error message) or it logs me in and then I get logged out when I browse to another page on the site. I don’t have this issue when I login to other sites via DuckDuckGo browser, and dont have this issue logging into thurrott.com with other browsers.

Does anyone else experience this? Is there a solution?

Thanks