Issue: "Acrobat asks me to sign in or says my trial has expired." Solution: Ensure you are signing in with your address and using Enterprise ID (not personal Adobe ID). Go to 'Help' > 'Sign In' and select 'Company or School Account.'
Issue: "Can't combine files or export to Excel." Solution: These are Pro-only features. Verify you have launched "Adobe Acrobat Pro" (not "Adobe Acrobat Reader DC"). Reader is free but lacks editing, conversion, and form creation tools. uc berkeley adobe acrobat