Scheduling and processing payments is easy, but don’t think recurring payments are trivial. Things can get complicated very quickly. You need to decide how to handle failures (how many failed payment attempts does someone get?), billing details must be kept up to date, and upgrading and downgrading plans can introduce all sorts of issues. Then there’s perhaps the most significant issue with recurring payments – you need to keep your visitors’ payment details on file. This introduces security, compliance, and legal issues.