Cannot view/access the document in the Document Records page after a day

Hello Experts.

I have been facing a unique issue with the Document of Records Page and would like your assistance to understand the same.

We have a journey created for promotion and post the completion of promotion, the promotion letter which is generated in one of the journey task get's placed in the document records page. I'm able to view and access this document only for the current day. When I try to access the document next day, the document isn't there anymore.

Does anyone know what is causing this issue?