Hello,

Please check which attribute create the variable product https://gyazo.com/1b95f39525311281688bd7445630fa09

Then enter each attribute item https://gyazo.com/c18d8b4303f3b2b57e5b5cafdbbd38d4 and remove colors, images and disable swatch if you have enabled in any: https://gyazo.com/5e0ab1506400746f4bff1a7f4c552220

As soon as you press “Configure items” you will see which attributes should be edited, the drop-down appears after all the attribute items would be “clean”

If you need further help, please let us know.

Best Regards