Hello
@martina
Some times bg levels can start to change due to many reasons.
If inserting the cannula in a different area doesn't work, then try a different type of set or get a cannula that's longer in length to see if that sorts things. I need to use different sets for different areas.....6mm for tummy, 8mm for backside or 30 degree angle, 6mm steel needle for top back part of arm and 30 degree for top side of legs.
If you think the sets are faulty, then use the bolus wizard sub menu and tell the Combo that the bolus is going to be delivered by pen or syringe and then see what happens to bg. The cause of the high bg might be basal related or could be bolus needing to increase.