we have members all around the globe

There doesn't seem to be any evidence that will convince them that the Earth is a sphere. Clearly, some of their members are troubled that when they look at the sky, though, and see other space objects that appear to be round in shape.

Mars is round. Jupiter is round. Venus is round. The Moon is round. It's almost as if they were all formed by pieces of matter clustering together as they orbit the Sun.

But flat-Earthers don't buy that explanation, and have come up with an alternative proposal, instead.

Which is where potatoes come in.

Their potato theory of the Moon proposes that the Moon is actually something that has hit the edge of the dome that surrounds our flat Earth. The electricity that passes through the edge of our dome (because, why not?) has caused the Moon's distinctive craters.