If you see “Sorry, unable to open the file at present”, your browser is
probably signed in to more than one Google account. Google does not support this for apps
like OMS. Try one of these:
Open an Incognito / private tab and go to oms-genesis.digcentrix.com.
Sign out of your other Google accounts in this browser, then try again.
Use a separate Chrome profile with only one Google account for OMS.
If you opened the link inside WhatsApp or another app, open it in Chrome instead.