When I open the Plex app on my PC, my internet is disabled

Plex Media Server Remote Access
1

Weirdest issue: I have internet until I run the Plex app. I’ve tested this a bunch, wasn’t sure at first why my connection kept getting disabled. It wasn’t until I installed Plex on a different computer and ran the app and my internet stopped until I quit the app that I realized what was causing the outage. Please help!

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If anyone else suffers from this and comes across this post: the culprit was my FiOS router. I turned off Network Protection and everything is fine again. This must be done using the MyFiOS app, NOT directly through the router homepage.