Cannot edit standard newsletter

Hello,

I had an automatic newsletter set up to send newsletters every month however it didn’t get sent automatically. So I tried to fix this by editing my newsletter and changing it to a standard one instead. Now I can’t seem to edit it back to an automatic newsletter because the edit button has gone missing. The newsletter shows in light green instead of blue. The only options that show are preview, duplicate and delete. What’s happening? I’ll be glad if someone can help me out.

Thanks in advance.

https://www.ads-software.com/plugins/wysija-newsletters/