Restarting an interrupted email to all users

Hi, I'm using Amember v5.1.8, and yesterday, I was sending out an email to all registered members. Most of the emails went out but at some point the connection was interrupted and I saw a 502 Bad Gateway screen. I went into the admin panel and can see the sent and unsent emails in the email queue log. Is there some way to "restart" or finish sending out the emails that didn't go?

And by the way, I recently moved to a new server and upgraded from v3 with the tremendous help of the folks here. I taxed their support ticket system I'm sure but they were great. Thanks guys!

I discovered that when I went to send a similar email this week, there was a link next to last weeks email that said continue. I click on it and finished sending them. thanks.