Have anyone received any decision from Louisiana Tech University? I applied there in Mid February fo

Have anyone received any decision from Louisiana Tech University? I applied there in Mid February for the PhD program on 'Interdisciplinary - Engineering - Micro and Nanoscale systems'. I submitted all supporting documents by mail to the university's Physical address in Mid February. In my online application portal there shows a tick mark beside my institutional Transcripts and each of my Letter of Recommendations. But still my application showing 'INCOMPLETE' (there is a '!' sign beside 'application completed' category). Could anyone please enlighten on this issue? I'm scared.
I have emailed to the graduate school regarding this issue several times. But they even didn't reply to my emails. I'm now wondering about what's wrong with my application? Have anyone faced similar fate like me?