Iphone 6S+ WIFI Connectivity Issues

My Iphone 6s+ has been working fine on my rogers ignite wifi up until a week ago.. now I have been experiencing some odd issues. Can't connect to certain sites - I can connect to google but I cannot connect to reddit/global news. Can't connect to certain apps- I can connect to google home/whatsapp/youtube but no games can't access modem from my Iphone6s+ browser Safari says "cannot connect to server" if I try to go on reddit and if I try to access the modem from the safari browser, I get the following message: "cannot connect to internet". I can't access the apple servers (to download from the app store). I've tried: restarting phone clearing website and cache resetting all network settings restoring iphone (twice) updating to newest OS rebooting modem resetting modem back to factory settings The wifi works on all other devices (iphone 8/10/tvs/laptops) for downloading/reddit/mobile games. I can use my iphone 6s+ mobile data/a different devices hotspot, to connect to reddit/app store on my 6s+ but it just won't work when I'm connected to the WIFI. Does anyone have any ideas? This seems absurd... I've called my ISP and they said everything looks fine.. Sometimes, when I try accessing yahoo.ca from my iphone 6s+, it shows me a screen that says "This device is paused".. I've gone into the modem and it doesn't show this device is paused or blocked