Steel tank, not copper?

If we clearly have to pay for.something, instead of it being wrapped into a license of so many things, I will push for us to take Zoom.

It just works better.

Annotating on screen is worth it alone, instead of trying to talk the screen sharer to what part of the screen you want to talk about.

Yes, use this and give the developer for this and for sponsor block a few ¢

For me it was CG-NAT. Pretty much the same as the double NAT HeavyRaptor has pointed out, just now something you fix yourself.

I am lucky and for a reasonable price can have a fixed IP for my broadband.

That made Jellyfin work perfectly, over a VPN using Wireguard.

It was more difficult setting up Wireguard than it was getting Jellyfin working!