Reply To: After the footer ends on a Category Page the page continues by being blank/white

We mean that server response is too slow. For the shop page it may take ~10 seconds. Here a screenshot https://gyazo.com/3f2cc08a061ea9ba0c40c5ee13b762e2

We can’t say exactly what is it caused by. You can check how it will work if you disable all plugins or switch to default WP theme.

Regards