Subsites don't have the correct admin links and gives an error x 2

When a user logins into their site the Admin toolbar shows their subsite name with the comments bubble and the "+ New" menu which works great.

When the sub user clicks "New Post" the link shows/reads as, instead of when clicked a WordPress message comes up (see attached)

Second error, which is possibly related. when I login as the Super admin and goto My sites. All the subsites are shown. The sites with the domain mapped show the, which is how it should work but the non mapped domains show on the dashboard links instead of