you can always remove the brim in the settings. large area objects some time here need a brim. the region where i live so in stead of the corner warping. wich happends to me i did put a brim

looks good :D

I'm not sure if it's possible to remove the brim if I'm using the Bambu handy app to send it straight to the printer using a print profile. If that's possible, please ignore my previous comment. Else, I'll try and upload a print profile without a brim when I get a chance