Hello and sorry you're having problems. Offhand, Youtube has announced they will no longer support the "Google" APPS on certain Sony products and this is an ongoing phase out that is occurring currently. We have no way of knowing if your specific model number has been affected at this time. However, to determine that this is the problem- I need to know if OTHER apps on the Blu Ray player are working as they should?
Let me know when you can see my reply please.