Ash here from the Shopify team. Welcome to the Shopify Community!
I understand that you've made some sales, but wish to change your selling currency at this time. I'm happy to help out! Once a shop makes its first sale, we lock the currency selector for a number of reasons. I can remove this lock, but it's important you understand why it's applied in the first place. The main impacts on your store when changing selling currency are:
Since actioning this request would require me to access your account, I've sent you an email to the email address associated with your Shopify Community account for authentication. After familiarizing yourself with these impacts, let me know if you'd like to proceed by replying to that email and we can take the next steps together!
Ash here from the Shopify team. I can absolutely help out with getting your selling currency changed.
In order to assist with this, I'll need to authenticate you on the account in question to access the back end. To do this, I've sent you an email to the email address associated with your Shopify Community account. Please review my previous reply in this thread to ensure you understand the impact changing your selling currency can have on your store, and then reply back to me via email so we can proceed with the next steps together.
For anyone else reading this with a similar issue, since unlocking the currency selector requires our team to access the back end of an account, please contact our support via email here to streamline the process.