Advice needed please

[Fazeryam]

Hi
Had an issue with hooting noise from my clutch on 2010 gti, took it in, had Flywheel changed + clutch etc, now garage tell me car will start but not run, no fault codes. They have checked various  sensors but OK,  last conversation they think timing is out. Is this possible? Car ran fine when I took it in. Any advice would be much appreciated.

[Snoopy]

If its timing, have a read of the timing chain thread lots of useful info in it.