Why are you arguing MY point here and making out like I'm not right?
Yiu can not log into P+ with just a Roku ID and PW. I for example (again..) do not have a P+ account..! I have a Roku account and access P+ thu Roku. So in this case and in that of the Op, a person has zero option to access the Watch History or any other direct P+ settings that are unavailable thru ROKU.
As I stated earlier, this IS the answer for people WITH a Paramount + subscription and who only access it Via Roku...
This is not a difficult concept. I can't understand the difficulty in understanding that a person can't use a Roku login to access P+ or Showtime, or Disney's et all.. specific settings. I don't have a Paramount + account. So if I went to Paramount +. Com to change my keep watching, tell me what user ID and PW would I enter..????? I can't get in that website because I don't have a P+ account... Honestly now I'm really curious I guess since you're so sure I'm wrong and your right. Just tell me and I'll try it.
Ugh... It's not a difficult concept.