Hello,
Please set one column in the Theme Settings > Product Archives > Sidebars.
Instagram has changed the integration process now the only API is available, please read and follow the instruction on how to configure that: https://xtemos.com/docs/woodmart/faq-guides/setup-instagram-api/
Then you can find the Instagram widget in Appearance > Widgets.
You can change the font by means of the Advanced typography option, which allows you to choose the item from a drop-down or insert your custom CSS class. Please navigate to the Theme Settings > Typography > Advanced Typography.
Here is the documentation providing more detailed instructions: https://xtemos.com/docs/woodmart/advanced-typography-settings/
Best Regards