Unable to block some smart watch notification s

I have a Huawei 2 and a S 6Edge, both updated and running smoothly but I am unable to block YouTube or Netflix notifications on the watch. These drain my watch battery. I have tried uninstalling and reinstalling wear app, clearing all caches and un-pairing and re-pairing watch and phone. I have also searched Google for a fix to no avail.
Any suggestions, please?
Thanks.

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