I am using the Creality ender 3 v3 SE with eSuns PLA+ in black. The recommended printing temperature is 205-220 and I am printing at 210. The bed is set to 65°. When I print somewhat flat parts. The edges warp off the plate, while the printer is running and the plate is still hot. Until a few days ago it worked perfectly and I don’t know what I am doing different.
It is always only the first few layers, and the print never moves, so that the printer would make spaghetti, its just the edges that lift of a few millimeters.
Lots of literature on this you can find, as it’s a common issue although mores with PETG. Hard to tell at that mag but your plate looks slightly textured. I love my prusa satin plate but when I have issues like this with a particular filament or print, I go back to my flat nontextured plate, clean it well and apply some glue. Btw, don’t use like an Elmer’s glue stick from your kid’s school supplies. The specialty liquid gluestick products designed for 3d printing are totally worth it imo and a must for tpu.