I have, but the only options seem to be how to re-pressurise, which I've followed a number of times (the blue taps in sequence) - feel like its going to be something really simple but no googling throwing much up at the moment....
Taps out of sequence? You should hear water flowing when moving one of them. If not, likely no water which could be a bigger issue. Sorry I can’t help more.
Have you tried YouTube. Our boiler is similar and YouTube showed how to work it b