Hi @Jim M the license has been renewed.
It not being configured correctly was my first thought, but I followed the tutorial provided about linking two Invision Communities, And I would think it wouldn't work all the time if it was, but it works all the time until it doesn't. So if it is set up wrong, I could use help to find out where.
I have created temporary admin accounts on both forums and have sent them to you via DMs here.