I cannot get my galaxy 5 watch to use Google wallet. I keep getting Google account authentication errors. I have check it is the same Google account on both devices, I have re installed wallet several time and also did a full reset of the watch to start again. Any ideas.
First of all, what smartphone are you using?
Second of all, you have the wallet app on your watch, can you try and set it up directly from your watch.
Are you by any chance using One Ui Beta version?
It will use the phone to interface with the watch, but it should work with the watch wallet only.
Whenever, I need to add a card to my watch wallet, it opens on the phone. By the way, the watch and the phone wallet are independent from each other, meaning that you will need to enter the card on both wallets.
Thanks and yes I understand but when I try and add a card to the watch I get the error message on the screenshot above which makes it impossible to add a card. When I lost into my Google account there are no error messages
Have you tried to log out from your google account and log back in using the same account on both.
In the end it might be also a compatibility issue, Samsung watch - Google pixel phone. Some apps might not work properly and this might be one of them.