E-commerce feature crashing

Hello,

I am having trouble setting up my e-commerce. I get the following messages:

  1. You are currently using Collection names and/or page slugs that Ecommerce requires.

Please rename the following Collection URL in the Collections panel: /category

  1. If I go to E-Commerce settings and try and set my store up, when I start to input my business name it crashes.

Please help!