Flex sensor inop and slow register

I recently bought 5 force pads (SEN-09376 ROHS) to use as sensors behind PVC panels on a wall with targets for balls. All 5 pads are wired onto 1 circuit, which connects to a simple LED counter… The sensors worked well until they were all installed and now the pads seem to be limited out and won’t register touch. Before they quit working. They were slow to register a signal. I know that these are force sensors. Is it possible that the ball strike is too quick to register force?

Looking to see if these are the correct product for this situation.

Can you provide photos showing how the sensors are mounted?

Was the earlier successful testing on a horizontal surface?