WI-FI on EMG2926 works perfect with iOs but not with Windows as of December 2019

WI-FI on EMG2926 worked perfectly with iOs and Windows since installation, about a year ago. But as of December 2019, wi-fi only works with iOs not with Windows. I did all resets possible and videotron sent me a new EMG2926 but the problem remains. Cannot open a web page with the EMG2926 tru wi-fi in Windows, but strangely enough, I can open web pages with the EMG2926 tru wi-fi in iOs. Replacing the EMG2926 with an old Linksys E2500 router fixes everything. Please note: EMG2926 works fine with ethernet cables and Windows, but not with wi-fi and Windows. What is going on with both EMG2926 wi-fi and Windows? Can anyone help?