California SDIRA - CAFTB questions

[Sam Handy]

Hello folks. I am new to the site. I was reading a post from a few years ago about self directed IRA's. I received a letter from the California State Franchise Tax Board stating they received my $800 for specific tax years but they were not able to locate a "tax return" for those years. I tried calling but they are denying all calls... lol... go figure.

What exactly is it that I need to do?  You can see the letter attached.  I have checkbook control and own bitcoin, that's it.  No real estate or anything.  I called a few CPA's but they do not deal with SDIRA's...  

Thank you!

Sam