I had a free account that I rarely used. Decided to upgrade because I was not happy with OneNote. I paid an annual fee. After several days, I deactivated my account, inadvertently, not realizing it could not be undone and I would not get my money back.
They finally refunded my payment and I upgraded again. I checked the monthly box and they charged me the whole annual amount. Either their website is misleading or I just need to give it up, take my losses and leave this platform.