What app/TV are you using?
TV setting
Is it on your Tv maybe
def stb setting... on any device i load my stb app on.. once i open it all my favourites are there which is correct but the clock display is on all
I had the same issue, I just cut a piece of tape and stuck it over the clock.
Cost £1 for the tape and clock gone for good!
On any channel, press the Tools button on your remote, goto clock and select hidden.