Can the ER605 Web Filter according to the WAN Port? I went into Web Filtering and all I see is IP Group for the LAN. I don't want to block the data all the time just want to block it when on Cellular

I just recently setup an ER605 Router and had Firefox save the password. It does Autofill however each time I login it asks if I want to update the Password and the password it wants to update it to i