Looks like there is a conflict with the template. You can apply a fix by applying the css codes below:

[gist]
.com_easyarticles body.contentpane {
height: 100% !important;
overflow: scroll !important;
}
[/gist]

is this the fox for the backend ?

there is no issue on the frontend

It seems like I was unable to access your site backend, this is what i trying to access yoursite.com/administrator, but it return me this following message :

Please contact your HOA Admin at admin@xxx.xx

can you update your details at your first post so we can better have a check?

1. provide us some screenshot which page unable to scroll from backend
2. FTP access
3. your site backend URL