This is list all popular issues occurs in MicrojobEngine here which might help you easy solve the problem if you are experiencing the same issue.
1) Email contact not send to seller when use the “Contact seller” form. http://forum.enginethemes.com/thread/tut-contact-seller-dont-work/
2) Modify the footer text : http://forum.enginethemes.com/thread/tut-remove-footer-text-powered-by-powered-by-microjobengine/
3) Modify header and footer email ( use the same core with FreelanceEngine) : http://forum.enginethemes.com/thread/tut-how-to-edit-header-email-and-footer-email/