“A few months ago, I changed my internet service provider. Since this change, I have been unable to activate remote access. Every time I try, it activates for a few seconds and then disconnects. I’ve tried several settings, such as manually configuring port 32400 and disabling Avast antivirus. My router was in IPv6, so I switched it back to IPv4 to try, but it didn’t work. I tried troubleshooting by optimizing the database. I’m using Plex on my laptop, connected via Wi-Fi with Windows 11. My storage is an external hard drive connected to the laptop. I downloaded the logs and the database, but I can’t make sense of them. I hope someone can help me.”
There’s also a guide with some more details on how to troubleshoot remote access issues. If that doesn’t help fixing your problems you could share the specific findings (e.g. if you can access/see the defined public/external port from your port forward on the router from outside your home network).