Third-Party application access from unauthorized device from another country is spamming me daily !

Third-Party application access from unauthorized device from another country is spamming me daily !

Hello i am being spoofed by some unknown hacker in America for some unknown reason , it's been going on for a week now even though I changed my password multiple times and ADDED Zoho OneAuth on my iphone. I'm putting two screenshots down as proof that some unknown guy from America keeps signing in my stuff even with the auth on.

I am very dissapointed with this e-mail service provider , this is the first time in my life where I pay for a premium e-mail to be under threat even after securing it with mobile auth apps.

I am expecting a serious reply from you guys and a FIX asap !