Have not paid for the CSS customization, but the table look is really not usefull.
Wish to have borders and a nicer look. See table in the middle section.
Even while editing looks better… Selecting Default is not working at all, it is still the one with stripes.
Please check how the theme could be improved.
I can open a bug report for the theme regarding the table styling not matching what’s in the editor, but I can’t make any promises that it will be fixed. Wilson is an older theme, and not one that has been optimised for the block editor, so our developers might not consider this a priority.
Failing that, the only way to change this styling would be with custom CSS, and even then it might be on the complex end of the scale. A better alternative might be for you to create your table in MS Excel or Google Sheets instead, and then embed it on your site: