Send Queued Campaign Emails... not working

Hi,

Trying to run normal campaign function; created campaign, set target lists (test & default), set email template.
Run ā€˜send testā€™ and works ok.
Run ā€˜send emailā€™ and list queues but does not send.
Try sending via admin and nothingā€¦

Can some assist?
M

Do you have cron jobs set up? Also check your scheduler in adminā€¦ scheduler. and make sure you have a scheduled job to send email campaigns set up and itā€™s running.

Iā€™m having issues with Campaign Emails being sent off as well. Has been working fine for years, but weā€™re seeing tacky behavior now. Weā€™re running version 7.4.1.

cron is of course set up and scheduled task for sending email campaigns is running (Job Log shows ā€œdoneā€) every 5 minutes.

I have thousands of mails in the queue. Only 5 are marked as ā€œin processā€, and have been so for 30min.

=> So Scheduled Tasks is shown as having fired successfully, but emails arenā€™t being processed correctly.

These are pure text emails without any attachments.
Database is not busy with any running tasks.

How/where could I debug something like this?

On another instance running v7.7.4 the button to send queued Campaign Emails doesnā€™t work at all. And it even seems to mess up the automatic sending of Campaign mails.

Again: Any idea whatā€™s going on or how to debug?

Whenever I have problems of a button not working, I try switching themes. For example, switch to SuiteP theme and see if the button works. Iā€™ve had similar issues with other buttons depending on the theme.