Conflict with MailPoet 3

Hi there,

I recently discovered that MailPoet 3 is not able to send e-mails while User Access Manager is active. You can see the mails in the task scheduler within MailPoet as planned but it will disappear as soon as the cron job is active. I deactivated all plugins and switched to a standard theme in order to locate the problem and to make sure no other plugin causes a conflict.

Any chance of fixing this problem? Do you need more details?

Thanks in advance and best regards,
Christian