@Bill ********
It’s all about the correct terminology.
So, you did the "change of visa type" from a tourist visa or a visa-exempt entry, to the 90-days Non-Imm-O Retirement visa, by proving you got 800,000 THB sitting in your Thai bank account.
This is very different an approach compared to applying for the 90-days Non-Imm-O Retirement Visa by the e-visa online system inside the U.S.A. or U.K. For an application to the visa, the equivalent of 800,000 THB can sit in your home bank account.
And then, by using both options, from up to 30 days before the 90 days stay permit of the “retirement visa” expired, and as soon as the money had seasoned in your Thai bank account for 2 months, you applied and got issued the "1-year Extension of the Temporary Stay Permit based on Retirement"
(which some people and even Immigration wrongly call "retirement visa", which but is no visa at all but just an "extended stay permit")