When playing the game and after the Elecmon scene and after taking a look at the Firewall again, you just play the Clawfootjob scene and do not cum inside him two times. Then you unlock Blowjob and don't cum inside either. Then on the main screen with Explore button and the like, you click a few times and the scene will be triggered. Basically, the main hub with all the buttons is merely a loop of "..." but if certain conditions are met a few scenes can play. I hope that helps.
As per description up above:
"The Thighjob Scene follows next. And it requires to have viewed the Bodyjob Scene, to have discovered the Second Firewall and to have saved or attempted to save Gomamon at every Digimon encounter. Not to mention a large blue good bar."
I am unsure what condition you haven't fulfilled honestly. It sounds like you should have it. Did you click a few times on the main site with the "..." to activate the scene?