Reply To: HTTP ERROR 500 when trying to edit any page or product

Hello,

Could you please check how it works with some default WordPress theme like twentysixteen to understand is it our theme issue or not?

1. Our theme doesn’t require any size for your product images. The only one advice we can give you is to make all images in the same size. Use JPG format for your product images.

2. You can customize your menu via Appearance -> Menus. Here is a video tutorial that should help you https://www.youtube.com/watch?v=fWUe8wPLG2g

3. Change your sidebar widgets in Appearance -> Widgets.

4. What kind of menu you would like to change? Could you send us some screenshot?

Regards