Tuning 2 month old blitz 30 doesn’t shoot

Hey shooters!!! Trying to figure this one out . Maybe someone out there can give me a little direction! 1500 rounds in and all is well till last week I pulled the trigger and click! Tank was half full so I drained it with the blender screw and recharged to 3/4 full and same issue. Just no air flow whatsoever! I am reaching out cause hatsan seems to not respond to any customer request forms , emails, or voice messages! I always use double filters when filling tank so I don’t think it’s a moisture issue especially after 8 weeks of use! I feel like it’s a valve issue or something?? Can anyone help?
 
hard to tell without opening it up ciuld be several things .. Hatsan will respond but it takes them a couple of weeks .. if you send it in its going to be 'week' if not months long process .. they arnt that complicated, what i would do is search out a parts diagram on their site and thrn carefully disassemble keeping track of screw and pin placement, how many threads show on linkages etc, take pictures at every step ... THEN if you discover toasted parts do a request to order parts ... youll likely do a better job than them getting it sorted and parts prices are fairly reasonable ...