If your subscription is on the edge of running out, and you need to pay. Here are the following options.
1. Discord Ticket (FASTEST)
Join the discord: https://discord.gg/ZPXXtzexj3
Go to #open-a-ticket
Click the emoji
And talk to a support agent!
2. Open a Ticket
Enter the title "Billing" (or something close)
Copy the id of your server (located at the URL)
In the body of the ticket say something like the following:
"I would like to pay my subscription for the server (IDHERE)"