Password change required daily

So im having a problem where after changing internet providers, upon logging in each day im told due to suspicious activity my account has been stopped which means i then have to change my password to be able to log in. Because of this every midnight i lose connection and then have to go check my emails and follow the password change instructions. Anyone else had this problem and can tell me how to sort this?

manully input your IP(static) , and take your router off of dhcp see if that works :P

I used to have this problem due to me switching routers like every week but it only happened the first time and after I switched it once it would be fine but anytime I took my ps4 off my network and then plugged onto another it would make me switch my password