My PIXMA MG6620 won't prompt for a password

[lrkuta]

  My printer finds my lan id but it does not prompt me for the network password when I try to access my network.  I have searched this forum for the above title and found a solution to this problem which says to disable the 802.11r wifi property.  I tried to set the security to my lan adapter to none but it will not let me do that.  How do I get my Canon Printer Pixima MG6620 to prompt for the password for my network?

[lrkuta]

I should have stated that I am running Windows 10 on a desktop.  I am switching internet providers and my printer will ask for the network password on the old network but not on the new one.  New provider is Tmobile.

[dlf26]

After spending the better part of two days with T-Mobile technical support I was finally told the best thing to do is buy a router from Amazon for $38 and connect my printer (MG5420) through it using WPS. I'm not sure who is the most at fault, but I would venture to say we can't be the only ones having this problem. Both Canon and T-Mobile need to alert their support staff to this situation and educate them in ways to fix it.  

[BassBonePhotog]

I'm blaming Canon. Not all routers have WPS. And Canon killing support shows how little it is devoted to customers.