I hear you on the support issue.  The 2023 Lacerte program has a bug.  Client lives in Japan and has married with his wife obtaining her ITIN (I've a copy of the IRS letter assigning the ITIN).  The Lacerte program says the ITIN is invalid and with some research I found out why.  The middle 2 digits (4th and 5th numbers) do not show up on the range for those digits in the Lacerte error.  The program is missing the range 50 - 65, which is valid per the IRS.  Hers falls in that range.  I clearly pointed this out in a Service Request and 3 days later got what is essentially junk.  The response went on about what is an ITIN and where to put it in the program and Oh! was actually talking about my EFIN number, and if so.... blah blah blah.  Nothing addressing the actual problem.  I have just sent another Service request and I will keep sending them until someone addresses the situation.