Discovery wants me to renew what should be a free subscription with sky

[Nblackwell]

My sky glass app Discovery did an update the other day and since then I can't sign in  without it asking me to renew.

my sky account still shows this app being included and says I have activated and linked it. How do I get access to this again? 

[peter-marlow+1966]

Have you used the q r code  to sign back on ? I have had no problems with it