Origin stopped opening before close date

Hi all! I am hoping someone could help me with the Origin app, because EA Support is not sure what to do.

The Origin app is set to stop working on Mac in April this year. I have an older model computer, so am unable to download the EA app. For some reason though, the Origin app has stopped working as well. 

The app will open but the pop-up will just say Connecting to Origin for hours. I tried to use the Reset Origin tool, but it keeps saying access denied. Has anyone had this issue?

I'd appreciate any and all help!