Stop car check oil warning

2.0Ltr tfsi. Oil level sensor started requesting ADD ONE LTR MAX OIL. Oil checked by garage with dip stick and level was fine. Issue kept reoccurring until STOP ENGINE CHECK OIL RED WARNING started appearing. Oil level checked again with dip stick and fine. Warning seemed to reoccur when idling engine or at low revs.
I have always used correct oil when topping up level and for oil changes. The car does use small amounts of oil as these cars tend to do. I am aware of issue with engine oil usage.
I have checked the oil sensor connector and seems fine.

My car has 110000 miles.
My car has

– Stop car check oil warning