If you have an issue with payments, flagged accounts, or anything of that sort which will require Brave to gather your personal information and do an investigation, you’ll need to create a support ticket at https://support.brave.com/hc/en-us/requests/new?ticket_form_id=360001302431
If you have an issue with Creators such as adding more channels, issues with payments, changing your information, etc then you’ll need to create a support ticket at https://support.brave.com/hc/en-us/requests/new?ticket_form_id=10061687185549.
Do note that suspensions are only handled via email at email@example.com and will not be answered on Brave Community or via the support ticket mentioned above.
Most issues, including cancelations, can be handled in your Premium Account. However, if you need to delete your Brave Premium account, have an issue with payments, etc then you can create a support ticket at https://support.brave.com/hc/en-us/requests/new?ticket_form_id=360003078831
If you have issues with Gemini, you can contact them via their support form at https://support.gemini.com/hc/en-us/requests/new?ticket_form_id=1260809732969