That stream works for me on a IdPi.
Can you do a function 11 on your main menu and see if the routing table looks OK? (there should be a default route to your router at the bottom of the info displayed).
Also make sure your DNS is setup properly if you changed the IdPi to a static address.
IP settings are from reserved IP addresses in the Broadband router, there is no problem with the device seeing the internet either. I do think however that this may be a networking issue, but bandwidth related.
Swapping the two Pi's revealed that the new Pi would play ( although not very reliably) in the old Pi's position and the old Pi would play in the new Pi's position.
The two Pi IDs are in adjacent rooms of the house ( If you could walk through walls probably less than 10 feet apart.
The house is a dead loss for WiFi due to the metal foil backed plaster board used on walls. So I have been using Powerline adapters both as point to point LAN adapters and wireless extender.
Checking the available throughput using the TP link powerline utility I could see 393 Mbps from the unit near the broadband router to one of the powerline adapters and only 79Mbs to the other.
More investigation showed these two circuits to be on a different ring main. The two ring mains are protected by MCBs and there is also a RCCD on that mains bus. Removing the two circuit breakers to the non-RCCD bus made about 10 Mbs improvement to both figures.
conclusion... Powerline is rubbish in a property with more than one ring main (mandatory in the UK for new builds).
So thanks for your suggestions, it seems that the MC23 build on the new PI ( or perhaps the wallpaper with the bug) tips it over the edge in dealing with poor connectivity.