Trouble activating team viewer on new pc

[bigjohnsull]

Hi all,
First post, so apologies if this is covered elsewhere.

I've gotten a new PC and installed Teamviewer on it. When I log in using my username and password, I get a message saying I need to authenticate the new device.
The email came (finally after much waiting), I clicked the link, it told me the device was successfully authenticated, so I tried logging in again and it still won't log in and still produces the same authentication error saying that I need to check my email for an authentication link.

I tried logging in via the management console, but that too gives me a message saying I need to authenticate! Talk about frustrating!!

Please help!
Thanks