I made my application on the UK ETA app. It's been 3 hours since I applied, but haven't received approval.
I applied for my wife and daughter after, and their applications were approved within few minutes.
Only thing I can think of is I had tried to apply last night, but due to lack of good light, the app was not accepting my selfie, but it had accepted my passport picture (not the chip .. I had to skip it). So I had abandoned the try, waited today until daylight, applied again when everthing was accepted fine.
Anyone had this experience .. wait this long ?