I just posted a similar issue/complaint.  I talked to Lacerte Support today and they had a manager watch me put in the SSN/EIN.  They had me clear browser data, try a different browser, etc. and same result indicating it's a problem on their end.  They said they had had similar complaints and they would work on it but no indication when they could get it fixed.  Ugh!  I paid an exorbitant price for Lacerte including this add-on that doesn't work.