[Plugin: WP-DBManager] The backup eMail most times comes twice

Hi,

the email with the backup file is coming two times at nearly every day. (I let it send me the backup once a day at 7:30pm)

Not always – yesterday for example, it only came once. I couldn’t find any pattern or reason for this.
When it does come twice, it’s always in the same time.

I guess it’s a common/known problem due to the method you are using to “trigger” the task, but is there no way to deal a little better (or maybe at all?) with it?

Thanks in advance, Manuel