1) You don't necessarily need to delete the connections folder, it wont hurt anything if you leave it. but if you delete it, you will just need to redefine the connection.
2) We can offer help here in the forums any time you need.
anyway looking at the code you have highlighted, I see the problem is on the code for the SecurityAssistusers['emailVerified'] value being used for the emailVerified column in the update record server behavior.
open the server behaviors list, double click the Update Record server behavior. and make sure the code used for the emailVerified column is:
<?php echo(($row_SecurityAssistusers['UserEmail'] != $_POST["User_Update_group_Email"])? '0': $row_SecurityAssistusers['emailVerified']); ?>