BT Sport App issues

[#1]

I have had BT sport pack on my account since may 2020. It has been working perfectly on the app through the PS4 as well as the Samsung TV app up until about a month ago. It now says my subscription doesn't allow to me view the content anymore and i need to upgrade. I can still watch the app on the Apple Ipad no issue at all and the YouView channels all work, but it is quite frustrating now that i cant access it on other Tv's in the house like i used to be able to. Can someone have a look at this. I have checked all help pages and they say i should have full access to the app on video consoles and samsung Tv's so it should still support this. I may need to cancel this add on if we can't use it like we were doing. 

[#2]

Thanks for your post @annelouisepugh 

I can't explain why the app doesn't work on your Samsung TV or PS4 now but can you try casting from a phone to the TV?