Xfinity router settings and port forwarding

Plex Media Server Remote Access
1

I am running Plex Media Server from my Macbook. I have all my movies on an external hard drive. I can access the movies via Plex on my smart TV if the hard drive is plugged into my Macbook. I want to be able to access the movies if the hard drive is plugged into my router instead. I have an Arris router from Xfinity. Below are a couple of screenshots of configuration from Plex and Xfinity. The port forward I created probably needs to be deleted or edited. Could someone assist me with what configuration I need to change/delete/add?

Screen Shot 2020-05-17 at 11.49.42 AM
Screen Shot 2020-05-17 at 11.49.42 AM1008×234 11.6 KB
Screen Shot 2020-05-17 at 11.48.39 AM
Screen Shot 2020-05-17 at 11.48.39 AM917×545 552 KB

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I should also mention that I have a WiFi extender plugged in upstairs. I’m not sure if this affects anything or not.