Logging in every 30 days is how we check to see if you still need your website. Since we're a free hosting provider thousands of people create accounts and then never log in again. The system automatically suspends these abandoned accounts to reduce server load, and if the owner still doesn't renew their account they eventually get deleted to make room for other people who are still using their accounts.
We're all for removing the annoyances of hosting a website on our service though. Since we've been struggling to pay the bills lately we've been brainstorming ideas to earn more revenue and donations. One idea is a user could set up a recurring monthly donation of any amount that they feel our service is worth from $1.00 USD or up. Much less than one dollar and paypal takes all of the money as fees so we don't get anything. As long as the monthly donation isn't canceled the recurring donor would never need to log in to their account again. If the recurring donation is canceled then you would go back to needing to log in once every 30 days or less. Is that something you would be interested in?