ITVX app was fine until yesterday (12 April). Sony TV Model is KD-49XH8505. Suddenly icon has changed from ITVX to ITV for no apparent reason and I'm getting a message which reads: "Update to ITVX. Some features may be limited in this version of the app. Please update the ITVX app from your app store. An error has occurred. ObjectfromEntries is not a function."

Have tried everything but it's apparently not possible to uninstall and reinstall unless I do a factory reset. Sony won't refer it up unless I do a factory reset first. Don't want to do that as I can't recall all the passwords from when we set up things like Amazon Prime, Now etc etc and so getting by casting via chromecast from tablet, which is OK but a bit cumbersome and shows that the problem is with the inner workings of the TV. Has anyone with a similar model found a way of sorting this? Thanks!