Hi, @nik, in order for us to troubleshoot we need to know the domain name which isn’t working. Would you be willing to please share that with us?
You can private message (PM) that to one of our support staff and I’ve confirmed that PMs are enabled for your community login. Note, that only one person can see the PM and this will likely mean a slower reply than posting the information publicly. Please feel free to reply to however you prefer though.