Unable to link accounts for skills?

[Wa10]

Hi everyone,

I have an original Echo which I have used for a little while mostly just for music and alarms ext.

Tried to install the MYO2 skill a while back and had a problem that when I clicked on link account, it took me to the O2 login screen however when I enter my login details and click login it looks back to the Alexa home screen, and the account isn't linked.

Assumed it was simply an issue with the O2 skill, and it wasn't important so I didn't bother trying anything to make it work. However I've just installed a Tado Smart Thermostat this morning, and I'm having the same issue linking that skill- it just looks back to the home screen every time.

Any ideas greatly appreciated, as the Tado skill is one of really like to be able to use.

Cheers,

Marc