Hello,

1,2) Sorry but it is not possible to change the number of columns unfortunately. We will try adding responsive options in the elements.

3) For the promo banners put them outside the row and add in seperate rows and then try changing the Responsive options of the Columns.

Screenshot for Clarification: https://ibb.co/QbwHhhX and set the width to 2 column 1/6.

4) Please explain in detail with the help of some relevant screenshots what you require to check it myself and help you out accordingly.

Best Regards