NIGHTHAWK R7000 Can't login to router configuration

[AndEck]

This router drives me crazy, sometimes I'm able to login sometimes not.  Most times I'm not.
No matter if try to login via PC and LAN using www.routerlogin.net or 192.168.1.1 or using iPad WiFi and Netgear App NETGEAR UP.

I managed yesterday after many, many retries to login after receiving it from the shop.  FW is up2date, after FW update have been able to login again. But now no chance... never have had such issues with any other RTR before - last one was Netgear WNDR4500 and never seen this problem. Is there a trick to get this fixed?

[antinode]

> [...] sometimes I'm able to login sometimes not. [...]

   "not able" is not a useful problem description.  It does not say what
you did.  It does not say what happened when you did it.  As usual,
showing actual actions with their actual results (error messages, LED
indicators, ...) can be more helpful than vague descriptions or
interpretations.

> [...] FW is up2date, [...]

   An actual version number would be more informative than your opinion
of what's "up2date" (today).

> [...] Is there a trick to get this fixed?

   That may depend on what's actually wrong.  Have you tried the usual
panacea, reset and reconfigure the router?

[AndEck]

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> [...]   "not able" is not a useful problem description. [...]

which part do you not understand on "Can't login to router configuration" ? Shall I explain it ? Or just wanted some kind of word picking? Not able to log into the router means log in to the config... not able to connect means not able to establish a connection with for example a pc. ... if you need help on such terms just let me know

> [...]    An actual version number would be more informative than your opinion
of what's "up2date" (today)., [...]
means it is at the latest revision from day of posting this question... and answers the most common answer to update  the FW ...
> [...]   That may depend on what's actually wrong.  [...]
wrong is.. not able to login to the router config   ;-)

But  seems when powering off and power on the RTR will fix that, but this can't be a solution to reboot the router every time I want to access the config.  A router always should be reachable to log in to the config. Maybe a Netgear professional is able to give a more helpful answer and is in the position to let me know if the RTR is faulty or not.

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[antinode]

> which part do you not understand on "Can't login to router
> configuration" ? Shall I explain it ? Or just wanted some kind of word
> picking? Not able to log into the router means log in to the config...

   I don't understand all of it.  Are you using a web browser?  Which?
On what?  With what as a URL?  Are you getting to the router's web
server?  Are you getting to its request for a user name and password?
Are you putting in the correct credentials?  Does it fail to respond?
Do you get an error message of some kind?  There are dozens of ways to
be unable to log into a router.  For the non-psychics in your audience,
who can't see what you're doing, and must rely on your description of
it, it's not clear which one you're experiencing.

> not able to connect means not able to establish a connection with for
> example a pc. ... if you need help on such terms just let me know

   See above.

> [...] means it is at the latest revision from day of posting this
> question... and answers the most common answer to update  the FW ...

   No, it doesn't.  An actual version number would provide some useful
information, and would be easier and more compact than your telling me
that you can't be bothered to provide the requested information.

> Maybe a Netgear professional is able to give a more helpful answer and
> is in the position to let me know if the RTR is faulty or not.

   I hope so, because my time is too valuable to waste this way.