Can't Publish Blueprints with Thumbnail
I can publish a blueprint just fine with with NO thumbnail (Even a thumbnail under 256kb doesn't work, any thumbnail makes it have an error) DLC Blocks don't affect it, as I've tried it without it. I've Rebooted my computer too. Nothing is working. I can only upload blueprints with no thumbnail. I've tried multiple different sizes, 1920x1080, 840x525 (which Dan2D3D suggested) and 960 x 540. None of this worked. This has only started happening recently and is affecting every blueprint.
Edit: This is happening to all Blueprints, either newly created or old. Not a specific one