You have the latest version.

Is the homestead still under attack? If so, that has to be ended before more portals will open.

Did you enter the last portal opened, get a conversation with either Astarte or the demon and return to the main section of the homestead through the portal (with a main character in the lead)?
If a portal is active but does not have a marker on the map, it means it is not completely open yet, and needs to be finished before the next portal can be opened.

Where is Zixzax? If he is beside the statue, then check the last opened elemental portal, or talk to the statue, if you can. If he isn't by the weaver, run around the homstead looking for him (keep an eye on the mini-map for green dots).