I have a wee problem with backlighting as well . That said, the Reolink doesn't do too bad when the sun is pointing right at it. Maybe some BLC is on by default?
Here is my example of a sunny day. The DB faces North.
Anyone in the driveway is washed out but a few feet before they enter our porch the DB captures them. I have another CAM (Dahua IPC-T5442TM-AS) in front capturing them so I am good, just wish the ReoLink had WDR like my Hik DB did. No Biggie...