So I'm coming to the end of my first month paid sub. I have selected to pay every 30 days (i think) but got an e-mail regarding payment iin a few days needed to carry on playing and to log into MS for my details.

I might be having a brain fart here but is it a recurring 30 day sub or do I have to keep logging in to MS and entering details to pay every 30 days?
Wouldn't like to think this was done to push people into buying the 180 day sub to minimise amount of times you need to enter details.