Pixma 3520 won't stay online

[Canononisland]

I have an issue anytime I disconnect this printer. When I turn it back on it cannot be found by any device. I have logged onto my router to see what devices are connected to my wifi network and the printer shows up but we I test connectivity no signal is received. So I hold down the wireless button in the th printer for the two blue blips, test again and it then shows up as active but if I test again literally 20 seconds later there is no signal once again. Any ideas what I can do. I've been running a Surface using Surface RT 8.1 but the problem is the same on my MacBook Pro and iPhone.

Thanks in advance.

[Michael]

Hello.

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