LPG died whilst driving

Hey all

My lpg died whilst driving today I've just replaced the lpg safety cut out switch which died previously due to water, I've just installed the cut out switch Saturday last week cars been fine this whole week. Anyone got any ideas as to why it would die again?
Its an apexus cut off switch

Also how safe is it just to bypass that switch by running a direct feed to the lock off solenoid?

The car does still run on petrol perfectly fine but 30 litres doesn't get you far on a tb45 🤣🤣


Cheers