Its not the Elec meter that is the issue, the comms hub and elec meters are completely separate and connect together by ZigBee transmission (even though they are physically connected it is only for power), so pressing buttons on the elec meter will do nothing.Shame there isn't a button on the meter you can hold to resync or something, doesn't need to be anything more than that.
What brand of meter has been install for elec and gas? some of the gas meters have a resync option but it is only available when opening the battery door, not something you can do without breaking security seals on the meter.