You should not apply the repeat selection server behavior on the entire form, you should only apply it on the fields that you want to be repeated, so at the end you should have one form, with some part repeat and some part not repeated and one submit button. For example:
<input type="text" >
<input type submit>
And then based on what you would like to happen, you could either use the multiple insert server behavior by itself, or you could use it with a combination with the single insert server behavior. This really depends on how you want the data stored in your database.