Yes there is, plenty of people have already mentioned that since the night between friday & saturday ALL goldcard users cannot log in.There should be no problems logging in. Do you get some sort of error message when you try?
It was also already mentioned by your support team that there are technical issues with the gold card logins at the moment.
I'm very surprised to see your message now. Does this mean that your support team hasn't even told this to the devs and that it hasn't even been adressed at all?