Hope you are doing well and sorry to hear that.
Have you sent the document for signature or have you sent it for review? What is the workflow/steps you did to share the form with your coworkers? A small video recording of the steps you did, would be very helpful?
Also, go to https://acrobat.adobe.com/link/home/ and click on Documents > Shared by you and see if you can locate the file in there.
Also for testing, please try to share a sample file with your self on a different email ID and see ho it goes.