It’s not a simple bridge as you have a square in the middle, walls are printed first so it messes up the layer. Just add support either to the whole model or just beneath the square. Alternatively, add one layer at bottom of the square so it will do a simple bridge and cut it off after.
Edit: just had a look at the preview and yeah the curves wall are not best for bridge but don’t use creality slicer so can’t help
Raise the area directly around the hole one layer, so the outside two large bridge parts get printed independently without being connected, then the next layer only has two tiny bridges under and over the hole, then the rest will be printed normally.
If it was a round hole, it would be a little more difficult, but a square hole would be really easy.
It’s not a simple bridge as you have a square in the middle, walls are printed first so it messes up the layer. Just add support either to the whole model or just beneath the square. Alternatively, add one layer at bottom of the square so it will do a simple bridge and cut it off after. Edit: just had a look at the preview and yeah the curves wall are not best for bridge but don’t use creality slicer so can’t help
Raise the area directly around the hole one layer, so the outside two large bridge parts get printed independently without being connected, then the next layer only has two tiny bridges under and over the hole, then the rest will be printed normally.
If it was a round hole, it would be a little more difficult, but a square hole would be really easy.