I purchased Yellowstone season 5 in HD for 36.99 , and now at episode 8 it is saying “Available through Subscription”

I purchased the Yellowstone season 5 HD pass on December 10th. This pass is supposed to cover the entire season, I called customer support to confirm this before purchasing. I was able to watch episodes 1-7, tonight I went to watch the mid season finale which was episode 8. I have been able to find all episodes on my streaming TV box through Xfinity where I bought them, now I am only able to watch episodes through Peacock streaming. No Xfinity options come up, Xfinity is who gave me this box when I signed up for their internet. When I click on Xfinity streaming it tells me I must pay 42$ for TV and a bunch of things I don’t want. 

Has the episode not been released to Xfinity customers who purchased the season 5 pass yet?

Or is Xfinity now requiring a new charge to use Xfinity Stream, and I am now unable to watch the Season pass that I purchased? 

I have never had such difficulty watching a show, I have also never had to buy one. I hope someone can help me remedy this.