Impossible for me to claim my character on WCL … Do you know how to do ?
What errors are you running into? If this is for Classic, you either need to just upload a log made with that character, or go to the Blizzard forums to update activity. How to do so is on the Claim a Character page.
Vanilla: https://vanilla.warcraftlogs.com/blizzard-classic/import
Wrath: https://classic.warcraftlogs.com/blizzard-classic/import
Keep in mind there’s no requirement to claim characters before logging.