For Plex Pass Subscription billing inquiries https://www.plex.tv/contact/?option=plex-pass-billing
Please note this is not a path for technical support. Technical support is handled on these forums
Here is other info on how you can manage your subscription including things like; how to upgrade, canceling renewal, viewing receipts, viewing the next renewal date
https://support.plex.tv/hc/en-us/articles/201580107-Plex-Pass-Subscription-Management
