What is this optionWho should be clicking this checkbox?
Salesforce introduced some breaking changes to existing swagger endpoint for consulting partners. A new endpoint to access sandboxes and swagger has been introduced as following.
https://admin.us03.dx.commercecloud.salesforce.com/#/
In order to overcome this breaking change if you are an existing partner and not a salesforce client you need to click this checkbox on portal when trying to log in
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Also you in your API configuration you will need to add additional endpoint as following
https://odsdashboard.royalcyber.org/openAuthRedictHandler
https://odsdashboard.royalcyber.org/openAuthRedictHandler/vendor
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Note: Please note you will need to check this checkbox only if you want to access sandboxes for consulting partners, for regular clients do not click this checkbox and this will keep working as is.