She means whatever app you use as a browser. In our case it's usually Safari. You can't access the forums through the QVC app anyway.
If you already went into settings/Safari and used clear history and website data and that didn't fix it, I'd try turning your phone off and back on completely by powering it down.
If you have a mac computer your phone will share history with it so you might need to clear cache and cookies on your mac also so it isn't pulling info from the shared history.
Are you running IOS 10.3.1 ? If not try software update too.
Don't Change Your Authenticity for Approval