have you test that channel on different device or app? if yes and still same issue then its channel/server related. did you report to your provider about it?
if no then I would test that too just to make sure but I believe its server/channel related.
you can also use team viewers to remote connect your box from your pc and transfer your recordings from your box to your pc.
once connected then from your pc remote connected to your box go to either
/storage/emulated/0/Android/media/buzzxr4000.tv/
/storage/emulated/0/Android/media/com.buzz.services.pvr/
and select your recordings and transfer to you pc.
looks like his ip got blocked or server issue.
I had two similar experience since last two weeks one using stb emu and one using buzz5 app.
1. my ip got blocked by server and it just gets stuck on loading forever using stbemu. I tried two different neighbors and it loads fine.
2. I had one server which connects on bzz5 but stuck on loading page. looks like server is gone now. it was working fine for sometime but got stuck for few days then gone.