Hello and welcome to the forums

It is perfectly safe to leave your batteries on overnight, I do it often although I usually wake up once or twice during the night and if I do I switch them off, but they have been left all night or all day without issues.
Some Pleo's just seem to like to walk backwards, we have had at least one other owner with that problem but it generally sorts itself out as Pleo 'grows'.
When picking Pleo up try holding his feet against your chest/shoulder and stroking down the back, it may take a few minutes but Pleo will settle down and snuggle into you. Just mind the feet don't get caught up on your clothing, if the servos detect that Pleo is having his movement restricted they will shut Pleo down to prevent damage.
The carpet issue is an easy one to sort, first of all it is the carpet causing the problem not the Pleo and there are two possible solutions, if your Pleo is on the 1.1 software (hold Pleo's chin and rear back sensor together until he/she pulls their feet together and sits, if he moves around while sitting they are already on the 1.1 OS.) then you can enable 'high-step mode' by holding the little black Pleo button on Pleo's belly and the two front leg sensors (just above the elbow) until Pleo moans or starts to move forwards. Pleo will then take bigger steps and lift his feet higher

You will need to do this each time you turn Pleo on. The second option is to make your Pleo a pair of 'booties' just a little something you can slip over the feet to stop the rubber gripping on the carpet and help the feet slide better

Hope that helps, if you need anything else just ask
