No airflow between freezer and fridge. They each have their own cooling fins. As mrrving mentioned, check the drain. Hose runs from the tray under cooling fins outside into catch pan. Make sure hose isn't plugged. Also without air movement the fridge often doesn't cool evenly, especially when full. You can get a small battery operated fan that circulates the air so the whole fridge remains the same temp.
Hank & Lynda
2003 Winnebago Adventurer 35U, Workhorse W22