Content manipulation and suspicious activity warning notifications

Hi,  Whenever I am connected to my home Wi-Fi network I getting a suspicious activity warning. When I click the details it says content manipulation. Description of this says content manipulation is where an attacker manipulates a websites contents causing you to perform harmful actions.  This allows them to do such things as bypass authentification or delete data. Whenever I get this warning it seems to also coincide with an ERR message I get on android that says connection interrupted a change in network detected. I get this when I click on a website briefly then it will continue on to the website. Anybody have any clue what is going on?  How to fix it? And if I can tell what or who has caused this?  Thanks in advance for any help, thoughts, opinions, feedback, etc.  Edit for info:  I am using sophos mobile security android that I installed from the play store.