Thank you for reaching out to the Community. I apologize you are having loading issues with the mobile app. I understand how important it is to send emails to your contacts in a timely manner. I would suggest uninstalling the app and reinstalling. This usually will fix any ongoing or potential issues. Keep in mind when using our Resend function, that this will only send emails to new contacts that were not already sent the email prior. Here are the steps to follow to ensure your email is scheduled to your Did Not Open contacts. Let us know if you have any other questions. Have a great rest of your weekend!