To answer the OP’s question, you may chargeback if you wish to take that path, however please be aware this will likely have negative impacts on not only your Lost Ark but also your larger Steam/Valve account as a whole that could result in you losing ability to purchase through the platform or potentially even being banned for fraud.
If your country have laws that protect you in some situations, great! You can follow through with those and choose the right path for yourself. I just want to make sure players are aware of some of the consequences they may be at risk for facing based on how Valve responds to chargebacks (I can’t speak entirely on their behalf since I do not work for that company of course, but these are all things that have happened to users).
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