login.aspx ?? Please help

Hi,

I would really appreciate any help. When I go to my site without putting the www. before the address a /login.aspx comes up. It’s really frustrating and I don’t know how to get rid of it. Does anyone know what this is and what should I do about it??

https://mkmdr.ie/Login.aspx

It should go to this:

https://www.mkmdr.ie

Thanks, any help would be very much appreciated.

Mary