Hello, I’m having a problem with the textures
It happens that when I select one, for some reason it tells me that they were not applied when importing, when it didn’t tell me before.
The issue here is not about the image you select but the one that was selected before.
When changing the import settings on an asset you need to apply them manually (at the bottom of the inspector). For some reasons Unity considers that the settings were changed on all of your images so when you select another one it ask you whether you want to apply the settings that were changed or to revert to the previous settings.
Try pressing Apply on every image in your folder, it should work.