Loaded more than one pellet by mistake?
Any sound at all when trigger is pulled?
Friend had issues with his HW110 and these folks sorted it with a service https://hw100tuning.co.uk/ would hazard a guess it'll be cheaper to get them to do it rather than Hull Cartridge once you factor in RFD fees, postage, and whatever HC will charge
Likely to be something very simple, Weihrauch are known for two things, ugliness, and reliability, if it's not working it'll be easy solved
TX200 .177 21mm TL | TX200HC .22 22mm TL | Prosport .22 22mm TL
HW40 | HW45 | Diana Mod5 | Webley Senior....... Because PCP is like kissing your sister (apparently)