@Raj66
Interestingly I noticed a problem this week with a couple of access points, that were power cycled last weekend, were throwing up the splash screen to clients in a policy that bypasses the splash screen.
No other access ppoints were affected, the clients were connecting fine and the policy was applied as expected.
In the end, I refreshed the policy by adding all of the clients back into the policy, and those couple of AP's were fine then.
I wonder if this is related to the OP's problem ?