2.4 constantly going down

Every day my 2.4 stops working and I need to reset the router. I had to separate the 2.4 and 5G as the devices needing the 2.4 wont work until the reset. The 5G never goes down and the App says there are no issues but the 2.4 starts working once the reset is complete until around 3am when it goes down again. Every. Single. Day.