Why am I unable to connect my Tab S 10.5 to my home wifi?

[AC Question]

Can't connect my Tab S 10.5 to home wifi

WiFi is on and I get the message that my Galaxy 10.5 Tab S is connected, but I can't access my E-mail, nor weather, etc. I get a "check Internet connection." My Note 3 connects fine as this is what I'm using to type this, through WiFi. I've reset my router, and of course powered down my Tab and back up with the same results. Not sure what is going on as it connected just fine over the weekend and just stopped the other day. It will connect fine at work.
My router is from CenturyLink, not sure what brand though.
Any ideas?

 

[B. Diddy]

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