How do I cancel my Coinbase subscription?

Could you please explain to me, in a step-by-step manner, how I can cancel my Coinbase subscription? I'm a bit confused about the process and would appreciate some clarity. Could you also tell me if there are any fees associated with cancelling my subscription? Additionally, I'm wondering if cancelling my subscription will affect my current balance or any pending transactions. Would it be possible to reactivate my subscription in the future if I decide to do so? Finally, is there a specific time frame within which I should cancel my subscription to avoid any unwanted charges? Thank you for your assistance.