OnePlus 6 Rooted from Factory Updates

Hello I have a OnePlus 6 that automatically updated to Android 11, opening the Ikea app advises against using the app on a “rooted device”:

I did not root my device, I have rooted devices in the past and I did not root it.  Confirming with 2 different apps, Rootchecker Basic, says my device is not rooted:

But RootBeerFresh says my device IS rooted:

What I’ve tried:

I went to a t-mobile store to get it replaced, this is the newly replaced device.  Until the update to Android 11 I did not see notification from the Ikea app.

I spoke with OnePlus support, we did factory resets, clearing cache, and reinstalling the Ikea app my device remains rooted.

Please assist, this device typically has my personal information on it.

Gracias

-Matt