Ah ... I thought it was a typo ... I've never heard of that model.
I don't have a clue.

But I would recommend googling around to see if there's been problems with that model. The model name is suspicious all the same. To save the UPnP issue ... if it's not already set ... why not manually port forward. At least that guarantees the port is open. Whether the isp keeps that port open is another issue. But it starts with you.