UPDATE: The problem seems to have remediated itself, haven't noticed any problems with starting for more than a month now.

The starting problem yes, around that time but I'm not sure about the idling.
It's a 2016 model.

The spark plug is clean, I've checked that some time ago. The ATV was involved in a slight rollover (by slight I mean it was tipped over while getting over a bigger rock doing like 3mph) and oil came back up through the air filter, could this be a result of that?

Thanks, do these need replacing or should I check the connections or something else?

A few months back I started having issues with starting when the engine is warm. If the engine is cold it starts right up even after a month but if it's warm it starts up then immediately stalls after the starter shuts off (this happens like 4 times out of 5), it takes 2-3 tries to get it started (giving it a little gas also works). It also idles a bit rough after the engine has warmed up, it sounds like it's skipping revs. Does anyone know why this could be?