Depending on which batch of flex sensors you received, your stickers may vary a bit from the instructions.
Per the instructions, you want the Sense logo facing the breaker. This means the solar facing away from the breaker.
If your Flex clamps don’t have a Sense house logo, you still want the Sense Solar sticker facing away.
Or to put it another way, if you think of the power coming from your breaker going to your device, you want the Solar sticker on the side where the cable continues out to your device.
@israndy, for Flex sensors, the orientation does have to be correct. It is a different process than the main CT clamps which are able to be installed and not match the instructions.