Please register me for the tournament if possible.

I also have a question – is it allowed to use this?

Interface patches: http://heroes.ag.ru/heroes5/files/zip/mini_patch.rar
# Fix_ButtonLoadInCombat – a button appears in combat (on the “wheel” menu), allowing you to interrupt the battle and load from a save.

Because:
7. Patches, cheats, codes, mods, and any additional programs that can change the game structure are PROHIBITED!

But the game structure is not actually changed. It is very inconvenient to restart a battle using Ctrl+Alt+Del.