If you have a NO API channel, you can change it directly in your HGR account, under Settings>Channel.
In case you have an API account, you have to relink your eBay account and the username will be updated.
Category:
eBay account
If you have a NO API channel, you can change it directly in your HGR account, under Settings>Channel.
In case you have an API account, you have to relink your eBay account and the username will be updated.