No letter 6419 due to recent multiple home relocations also momentarily unable to access IRS onlineaccount amount being asked total of the 6 month payments only?

not sure what your question is ..... if you are asking how much you received for the Advance Tax Child Credit, short of checking your transscript on IRS.GOV, suggest checking you bank account statements from July - Dec, 2021.  

be sure to take the time to get this accurate: 

if you understate what you received, the IRS will adjust your refund to match their records.

if you overstate what you received, the IRS is NOT going to adjust to match their records and you will not get the money that you are entited to. 

Thank you! With one answer, you’ve actually answered all questions I had.