Aqara H1 double rocker - config keeps changing

I have a number of these Aqara's and most of the time they are bullet proof.

Recently I have found that they sometimes stop working as programmed, I use 'Multi' state, so Left click, double click triple click and hold.

My dining room was working fine yesterday then today I tried to to select my 75% left triple and it did not work.
Looked at Z2M and found that the device has gone back to fast!?

Tried to put it back to multi and it would not let me.

Is fast / multi a feature within Z2M or within the switch itself.
I am aware you have to activate the rocker to change from Fast to Multi.

Thoughts please.

TIA, Paul