Recently the BBC made some changes to DVB muxes to allow regional HD news broadcasts: Update on changes to BBC One HD on Freeview/Youview in England - Media Centre
I've retuned the HDHomeRun via the app, but now channel 101 (Freeview in UK) shows the channel as unknown in EPG (even though working fine). I tried force-restarting the app as well.
Background here Update on changes to BBC One HD on Freeview/Youview in England - Media Centre