1/ What did you do before this happened? Please try to remember.
2/ In docs of the WooCommerce plugin you can find info about products and categories creation – https://woocommerce.com/document/managing-product-taxonomies/
Did you work with WooCommerce before?
click they redirct me thre on same page bcz of link – provide screenshot what exactly place do you mean.
3/ Check WooCommerce > Settings > Emails
One standard license is valid only for 1 project. Running multiple projects on a single license is a copyright violation.