The box from my isp doesn’t support bridge mode. Maybe I am having the double nat problems?

I’ll need to check for this. I have the ISP box plugged into the wan port of the router. It shouldn’t also be handing out IP, but it very well may be.

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B&h photo and video as well as adorama let you buy ubiquiti equipment and return it.

Ubiquiti has a reputation for not accepting returns on properly functional gear