I've set my settings that a user can be deleted 15 days after the second reminder but it seems to do it immediatly after the second reminder.
The pictures provided (admin log showing second reminder mail sent and user deleted at the same time) support the alleged behaviour during automatic reminding and deletion. Since I have no clue what the reason might be I have changed the sequence in which users are reminded and deleted in order to avoid checking for users to be deleted right after they have been reminded the second time.
Since it is not clear what version was used I prepared two versions of the script doing the automatic reminding and deleting,
one for Userreminder 1.2.1:
and one for Userreminder 1.3.x:
Please unzip the correct version and copy it via FTP to the
ext/mot/userreminder/event
directory overwriting the existing file.