What is the $1 charge on Roku?

Excuse me, could you please elaborate on the $1 charge that appears on Roku? Is this a one-time fee or a recurring charge? What services does this fee cover? Is there a way to avoid or cancel this charge if I'm not interested in the services it offers? Additionally, is there a clear explanation of this charge available on Roku's website or through customer support? I'd appreciate any clarification you could provide.