Website update.
Added 2021-07-23 20:15:37 +0000 UTCOK, the 503 error thing seems to have been sorted out (it was apparently something affecting multiple users). I'm just waiting for them to double check something else and then the main page should be back up.
For the time being, all of the other pages seem to be just fine: https://www.collectedcurios.com/sequentialart.php
Sorry for the disruption.
