I've gotten the same rejection notice.

There is nothing in 1, 2 or 9A in my case.  The problem is that 1 has not populated in the form, but the SE deduction has populated in Schedule 1, line 17 (probably as a result of entering 1095-A).  Entering the deduction on line 1 of 7206 causes the deduction to double up.  There is no way to override Schedule1, line 17 to avoid the double up.

I cannot delete 7206, and have tried everything, including zeroing out all entries. It keeps popping up after I delete it.

Rather than restate the problem, have a look at these threads: 

Form 7206 -- I've described the problem in detail here.

Glitch in Form 7206

@iusdcm1 is on both threads if you want to search for them that way.

Please also be aware that 7206 is NOT mandatory for the SE deduction unless there are multiple sources of SE income.