Need some help with supports. I'm printing a case for something and the edges curve up slightly. The area under the supports keeps coming out like this, the rest of the print is literally perfect. Any ideas?

Printing in PLA on an Elegoo Centauri Carbon. 0.4mm nozzle printing at 0.12mm layer height. 210 C nozzle on a 60 C print bed. I've tried printing it with the chamber closed (with fans on default and with the extra fans on), and with the chamber open (as recommended by Elegoo). Chamber temperature when closed peaked at 36 C, was less when open. I've tried normal supports and tree type, and I've tried rotating the model 90 degrees. I've also tried printing without supports and that area also turned out bad.

This is the specific item I'm trying to print:
https://www.thingiverse.com/thing:6584390