I have had an account with Blizzard for several years now. I changed my username (referred to as a battletag) only once, over a year ago.
I now want to change it again because searching it on Google shows personal info about me that I don't want others to know.
Blizzard charge for changing the username. I contacted them mentioning GDPR, and was told it looks too generic to be personal data, so I would have to pay for a change. Their GDPR contact agreed with this.
Surely it is personal data, because they can search it within their own database and link it to my real name which makes it personal data under GDPR.
Am I not understanding GDPR correctly, or are they violating my rights?