On mobile, the order summary panel can be toggled with the Show order summary link.
There are additional checkout settings you can customize from the Settings > Checkout page of your Shopify admin panel, including customer accounts, form options, order processing rules, language and refund, privacy and terms of service statements. For more information, see Shopify’s article Set up your online checkout.
The checkout settings are the same across all Shopify themes and are not specific to Ira. If you require help with your checkout page we suggest that you reach out to Shopify.