If it's any consolation, I have the same problem in Drake software.  My clunky work-around (which may be too late for you this year):

1) Before I renew Protection Plus, I go into my own return and "check the box" to opt into Audit Protection.  That WILL conveniently generate a nice 7216 disclosure letter, with my name at the top as Firm and my name at the bottom as Taxpayer, that I then print to PDF.  Using a PDF editor I remove my name as Taxpayer (but keep my name as Firm).  I print a stack of these to slip into the client packets (unfortunately manually).  I also generate a PDF which has the 7216 letter on top and the five pages of tiny print behind it for folks who get everything electronically (I assume you get the same five pages of tiny print as I do).

2) Then I uncheck the opt-in for audit protection (in Drake I actually delete this entire input screen).

3) Then I renew my PP subscription and Drake has a way to refresh the software so it turns on for all clients.  Problem is, once I do this, the software no longer generates the 7216 letter.

Some clients sign, some don't.  I tell them it doesn't have to be signed unless/until we have to open a case with Protection Plus so they can sign now, sign later, or hopefully never have to sign!

I've never had to open a case so you could argue this service is worthless (you might also argue that insurance is worthless if you never have to use it).  I signed up three years ago when the IRS wasn't opening mail or answering the phone.  I may decide not to renew next year if IRS customer service returns to "normal" but after the horror stories of tax professionals not being able to get through, or being on hold for two hours only to get a "courtesy disconnect", I decided it's worth $10/client to let someone else deal with that hassle.  I agree it doesn't make sense for a larger firm with more resources.

Rick