1) There is no support for LeadBolt in CocoonJS
2) While submitting app to LeadBolt it's enough to put link to i.e. your webpage (just any page, later you can change it)
3) I'm pushing LeadBolt for Construct 2 support since JUNE 2013
4) You can push them too:
supportxxk@leadbolt.com
appsxxk@leadbolt.com