Devices can't properly access server after formatting computer

Server Version#: 1.21.4.4079-1b7748a7b

Recently had to format my laptop and reinstall windows but since then I haven’t been able to get Plex’s remote server to work.

My PS4 keeps saying that it’s offline, my phone and table can pick it up randomly but says is an insecure connection & it goes to the worst quality when streaming from phone to Chrom Cast.

Currently the server on my computer says that it can’t read any IP addresses & it has randomly said since resinstalling that the net drops out.

I’ve done double NAT checks, gone through all configurations and options that I can. Looked at the router and bridge. Deleted and resinstalled on all other devices. Still haven’t tried to Port Forward yet.

Also, currently pretty muddle-headed due to pain from a fractured knee, so probably not thinking of some obvious fix.

any help would be appreciated.

thanks in advance.

Issue fixed.

Avast was blocking Plex.