Moho Pro 12 came out 8 years ago and Smith Micro hasn't supported it for quite some time, so I'm not sure you'll be able to find that free bonus content anymore. TBH, I can't recall what that content could have been but you're probably not missing out on much.
Moho 12 did come with some decent content already built-in and you should have it installed already. This is the content hayasidist it talking about, and you can also access it from File >Import >Import Custom Content. Back then, I learned a lot from taking apart this content to see how they work.
It sounds like you bought Moho Pro 12 from a third party, so I hope you have the final version which was Moho 12.5. This version was the final and most stable release in the 12.x cycle, that is, until Moho 13.5.x came out. Smith Micro left the final 12.5 installer available on their website for a while after they sold Moho back to Lost Marble, but I see they finally took it down.
(Edit: this is incorrect. See my next post for the correct info about how to get the final installer for Moho 12.5.)
FWIW, Lost Marble will upgrade the Smith Micro branded Moho 12.x to Moho 13.5.x at a discounted price. (As of today (5/15/22) the upgrade is on sale for $149. Don't know how long that will last.)
I mainly use Moho 13.5.4 these days but I was still using Moho 12.5 at work even just a few months ago. I used Moho 12.5 all throughout
Boss Baby: Back In Business for the fantasy and backstory segments, and in
Fast & Furious Spy Racers for its fantasy/backstory segments plus some of the more whimsical screen graphics. (For example, Frostee's 'Tamagotchi' drone startup screen.)
BTW, I use Cartoon Animator too. I got the Pipeline edition to explore CA as a possible replacement when Smith Micro abandoned Moho back in 2020. I think CA is fun to play with and has a well-designed performance capture workflow, but unfortunately (for me anyway) that's where all the focus is. Hand keyframing puppet animations in CA is awkward at best, you're limited to using only bitmap artwork, and there's no equivalent in CA for Moho's excellent Smart Bones system.
For hand-keyframed 2D puppets, IMO Moho is way more capable and polished. (To see some broadcast TV examples, check out my demo reels here:
https://littlegreendog.com/movies/demo-reels/.)
I was so happy when Mike and Victor acquired Moho and released Moho 13.5. The improvements they brought to Moho in the last year or so have been incredible.
Anyway, I hope you like using Moho! In my experience, the rigging process takes the most time in Moho, but once you get the rigging down, animating characters in Moho is super fast and really fun!