TS-233 not showing videos on Allshare TV

present: TS-233, version 5.2.9; no videos on Allshare TV, images and music work

What exactly is allshare TV?

a Samsung TV UE 46D7090 from around 2012

So then DLNA, otherwise the thing won’t be able to do anything anymore.

The best option would be an external stick with Kodi (via SMB). It can handle all current formats, unlike a 14-year-old TV.

Thanks, what does extra stick mean? I have an Amazon (device) for possibly Mediathek — do I need to install anything else on it? How?

Amazon Firestick (depending on the model) does not allow sideloading.

An Android stick should fit best.