No giving up guys .. Remember that you didn't get rejected yet .. Also, note that on the website is said "Applications for Fall 205 are currently being reviewed and will be accepted through April 9" this means that up to April 9th, applicant were able to submit applications .. but it doesn't mean that reviews have ended ..
If you have other options, you can decide to go with them, otherwise, don't give up hope yet .. until you get that decision, there is hope.
I am in the same train as you .. I haven't even gotten an interview yet .. and I have applied way back in December before the first deadline .. "If it was meant to be for you .. then no one else will get it" Keep this in mind
I know how nerve wracking this waiting is .... and believe me I have went through all the stages of depression .. but there is still this part of me which thinks "what if?"
What if they like my resume but they are waiting for someone to decline so they can accept me? what if they are actually not finished reviewing and I am next?
Remember that some people got waitlisted, and so If they reviewed our resumes and liked us but the program was full, they would have either waitlisted us or rejected us .. but neither happened so in my case, the CS PhD is not full yet
Keep your hopes up .. but still balance your feelings so you are not shocked if the decision was not in your favor .. Soon everything will be revealed and everyone will have the closure they deserve ..
I hope I am helping at least a little bit .. I am going through everything you guys are going through and I am a citizen of Saudi Arabia currently finishing my M.S .. so this is seriously an amazing opportunity for me and I absolutely wish I will be accepted
Best of luck to everyone