Ok this has been happening for some time now. Plarium likes to push it off as a players connection issue when its their system that has the problem. In seige the game freezes happens nowhere else but there for me and my connectionis great. 

This seige battle multiple people from the clan are having the same issue. We are losing scrolls because of this flaw in the RAID system.

If Plarium isn't going to address this issue they need to at the very least stop restricting first choice teams that are now blocked from use after the freeze happens. Not just a scroll lost but also your best team can nolonger be used.