Incorrect password - extender

Netgear has set up a community forum specifically for the NightHawk MESH products. Most of the people who watch that forum are more likely to have experience with NH MESH products and know how to work it better than those of us who follow this router forum. Might be more likely to find someone who has a solution if the question is posted there:
https://community.netgear.com/t5/Nighthawk-Mesh-System/bd-p/en-home-nighthawk-mesh-system

Please use this link to the main forum product list to review and choose where to make your posts. 
https://community.netgear.com/t5/NETGEAR-Forum/ct-p/en-netgear

Thank you.

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GemJ wrote:
I've found loads of posts about this for the same model extender and others but not a single one seems to be resolved. Same story: extender was working perfectly, received new router from ISP, connected extender to WiFi, green router light, extender network showing on devices but every time I try to login it says 'incorrect password'. Devices are MS Surface (Windows) laptop, MacBook and Android phone. Because I can't log in to the extender network, I can't access the extender online. Yes I'm definitely using the right password. Yes I tried factory reset. Please help?

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