How can I cancel my Serum monthly subscription?

I have no money and I need to cancel my serum subscription so my account doesn't go into the negative, can anyone tell me how to do that?

I'm sorry to hear that- you can pause or cancel the plan here:
https://splice.com/plugins/your-plugins

the link doesnt work. it has to be changed. how can i cancel my serum subscription?

Give this a shot:
https://splice.com/profile/plans