I appreciate you trying to help. I've already taken the steps you recommend, and I went through them again just now to be sure. The Qualified Business Income deduction worksheet still will not accept any value I enter, even though I've linked each 1095-A to its respective business. I've entered "$0," I've entered the respective 1095-A amounts, and I've entered the premiums we actually paid. Running Smart Check always brings me back to the "Check the entry" screen showing the worksheet.
I believe the issue is that because we ended up qualifying for more premium tax credit than we expected, we ended up essentially being reimbursed, via the Premium Tax Credit at filing, for all the premiums we paid. (The monthly advance payment of premium credits in 2021 was significantly less than what we ended up qualifying for, due to covid-related changes). This resulted in us being unable to claim any deduction for health insurance premiums we paid ourselves (because we will receive credits instead).
Does that make sense?
