adminlogin not working

I have a website built with wordpress. It is hosted under ipower. I changed the domain pointer so my domain name went directly to my website (previously you have to type my domain name and also wordress. I wanted when googled or put in the address bar just my domain name to get to my site. After the domain pointer was changed I can no longer login to the wordpress dashboard. The admin login button takes me to my webstie no to the worpress login. Can anyone help me please. The hosting account said it was a wordpress problem. thank you Lori