Plex server IP address issues getting setup in NAS

I created a media server on an old PC over wifi a few months ago. I recently got a synology ds425+ and wanted to run my Plex server through that. I cannot access plex through the http://<localid>:32400/web because the IP of the server connected to my plex account does not match the IP address on my NAS. Is there a way to completely delete the server tied to my account and start from scratch through my NAS?


Mod Edit: Formatting. @FordGuy61

You can have multiple Plex servers on your account. Running Plex on the PC does not stop you from running Plex on the Synology at the same time.

That written, if Plex on the PC is no longer installed/running, you can remove the server from your account by removing it from your list of Authorized Devices.

Regarding the Synology…

If you have not done so, you need to claim the server. From a PC on the same network, point a private/incognito browser window at the IP address of the NAS. For example, if the IP address of the NAS is 10.1.2.3, use http://10.1.2.3:32400/web. You should be able to login, go to Settings (wrench icon), reach server settings, and claim the server.

If that does not work, then follow FAQ 31: Reset / Reclaim PMS on DSM 7 (Not Authorized - Locked Out). It will claim the server (add it to your account).

Once successfully claimed, you can access the server using other Plex clients (mobile app, Smart TV app, streaming sticks, etc.). It will also appear in the list of Authorized Devices for your account.