Hi!
Yes I was able to fix this issue. I am with BT in the UK and they have a network protection feature that was not compatible with the website and game.
I had to log in and disable this (it was only an additional security feature) and I can now access the game alongside other previously blocked websites.
Another layer to my issue was being unable to login to the silver server after merging my accounts, changing my password fixed this.
Thanks :)