YouTube app stops working on mobile data?

I have a Huawei Mate 8 and the Youtube app does not work anymore unless I'm connected to the Wi-Fi. However, I have a good connection on mobile data and all other apps work otherwise. Can use Youtube only in Chrome.

What can I do?

YouTube about mobile data is generally a bad idea. YouTube sucks a lot differently

Maybe you showed that you can use YouTube with mobile data

However, YouTube sails a lot over mobile data

It is now again. Probably Google