Hi, @batouly !
Thanks for reaching out to us about this. I would be happy to help you change your currency setting after going through a few important points.
The reason why the feature to change the currency is locked after making your first sale is to give us an opportunity to explain the impact it may have on your business. Here are a few things to consider:
Do you still wish to move forward with the currency change?
* Note that when the currency setting is changed, it will reflect in the shipping as well *
I look forward to your reply.
Please check this link. may be you will find solution..
Great! Thanks for confirming @batouly !
I will be sending you an email shortly so I may access your account to help you change the currency.
Keep an eye out on your inbox.