Here is the help article

https://accountants.intuit.com/support/en-us/help-article/login-password/resolving-errors-firm-admin...

MY GUESS Try the Lacerte Tool Hub https://accountants.intuit.com/support/en-us/help-article/system-responses/fix-common-problems-error... Look for the FORCE option to reinstall the software. Turn your computer off afterwards and restart.

You may have to contact support to resolve it, but your opener of the program hanging up makes me think the reinstall and restart may fix it.