Pavel,
I am not a "Lord", which should be obvious.
I realize you don't know who I am so I am trying hard to overlook your tone of condescension.
Having played Facebook Stormfall for more than 5 years, I am well aware of how to do a League Attack. I have even written a step-by-step tutorial that others have successfully followed on many occasions.
A player contacted me in a PM to initially report this issue when it happened to him and others in his League.
I tested the League Attack Scenario on all three Facebook Stormfall Servers. This only malfunctioned on Server 1 (The Dark Plains) and continued to malfunction for several hours, as noted by the comments on the Facebook Stormfall Community Forum page where I have been a Moderator for over two years.
The issue was NOT with selecting the Units, AS NOTED IN MY REPORT.
The issue was that AFTER the Units were selected and the Attack was launched, the game did NOT send all the Units that were selected.
The game ONLY sent the Units of the Attack Team Leader, leaving the other SELECTED but not sent Units, in the Castle of the Attack Team Leader.
At the time of your reply, the issue was still occurring but does not appear to be occurring at this time.
Players unnecessarily lost Units because the game malfunctioned and did not send all the selected units.
Support should restore those units to the players that incurred the losses due to this malfunction.