If you need to generate screenshots required for the approval process, you can register to Browserstack.com for a demo account and use this for screenshots. You can also use a service like https://previewed.app/ to build screens using the appropriate dimensions.

You can also submit a publish request, so we can help with the submitting for publishing process  - Using the BuddyBoss Publishing Service. 

For DFY customers, this is already part of our service and is provided upon completion of your project.