Cannot Remove Background Image

I have recently switched to Force Login from Memphis Custom Login and was looking at your plugin for a replacement.

I added a background image and not want to remove it. I deleted the plugin and reinstalled and the background image is still there.

I do not see the logo I used or the background image in Customiser even though both are obviously there.

How or where do I remove this?

Thanks,

Phil

https://ww.wp.xz.cn/plugins/login-customizer/