Sensors stopped working on accenta Optima?

Hi,

I have an Accenta Optima 8EP416 LED Keypad alarm. Have recently had to move the sensors on the wall due to fitting coving. This triggered the Tamper alarm and although I have managed to re-set the keypad (I.e just power and Day LED's lit now and not tamper lock-out) none of the sensors work.

As such when you go to set the alarm it immediately lights up all zones as having errors with them.

Any help please would be appreciated

Thanks.