When i was 255 i crafted some Zeus item and save it, deleted old codes. Now when i load my 255 (how it says in txt-save file) i become 256! My Thunder Dagger only +1, and i can't enter pillar for up it. Is there any way to get back 255 lvl or enchant Dagger?
Zeus items will level you up once you have created a single piece of gear, hence why you are 256. Honestly, i do not know why a group would allow you to join the group until you had fire gauntlets since you cannot go back to previous dungeons once you are 256+.
Unless you haven't emptied the trash on your computer you're a little up the creek with regards to your current position. I highly recommend you try keeping all your replays, screenshots and codes on a dropbox/google drive. This way you can go back to any point in the game should you desire.
Code retrieval is only possible with proof of 1-265 replays is given. Unless you actual have this they will not be so inclined to retrieve your code for you.
Unless an admin states otherwise you may need to recreate your character.