There's also Aptos Chain ^{[AFAICR, it didn't exist in the past]}.
^{- For those who might be interested, by default it's set to BSC Mainnet, but you can change it by clicking the green dot in the upper left corner.}

You're probably right, but based on "this archived list", I think something else might be the reason:

• The first time that it started showing that error, was on "OCT, 13, 2022" and the "last active archive ^{[AUG, 16, 2022]}" was roughly five months behind ^{[refer to the timestamp column]}.
• There's also this "open issue" in Blockstream/esplora repo.

And now you've removed the V3 address as well <sup>[only the V2 address wasn't working (the shorter one that has 16 characters)]
- I should've explained it in a clearer way (my bad, sorry).</sup>

Yes, I do know that but only a small portion of thread starters maintain their threads after a few years ^{[unfortunately]}.